Improve API-based documentation

Improve user guides to deploy VNF/CNF by API-based procedure.

Issue-ID: SMO-129
Signed-off-by: Ayumu Ueha <ueha.ayumu@jp.fujitsu.com>
Change-Id: I7e85ebda1295700059e84235009a819d96990831
diff --git a/docs/tacker-user-guide-vnf.rst b/docs/tacker-user-guide-vnf.rst
index 8f03c34..5c6c9bd 100644
--- a/docs/tacker-user-guide-vnf.rst
+++ b/docs/tacker-user-guide-vnf.rst
@@ -6,7 +6,11 @@
 ============================
 
 This user guide shows how to deploy VNF (Virtualized Network Function) via Tacker.
-See the `ETSI NFV-SOL VNF Deployment` for the original procedure.
+See the `ETSI NFV-SOL VNF Deployment`_ for the original procedure.
+
+.. note::
+
+   This document focuses on some operations. See the Tacker `Use Case Guide`_ or `API Reference`_ for other operations.
 
 .. contents::
    :depth: 3
@@ -15,6 +19,64 @@
 Prerequisites
 -------------
 
+Credentials Setting
+~~~~~~~~~~~~~~~~~~~
+
+To use Tacker CLI, you need to configure the credentials, please change the ``username`` and ``projectname`` to be executed according to your environment.
+
+.. code:: bash
+
+   $ source ${devstack_dir}/openrc admin admin
+
+If you want to access Tacker via API, you need to get auth token by following procedure below.
+
+.. code:: bash
+
+   # Create request body for issuing access token.
+   $ vi get_token.json
+   $ cat get_token.json
+   {
+      "auth": {
+         "identity": {
+            "methods": ["password"],
+            "password": {
+               "user": {
+                  "domain": {
+                        "name": "Default"
+                  },
+                  "name": "admin",
+                  "password": "devstack"
+               }
+            }
+         },
+         "scope": {
+            "project": {
+               "domain": {
+                  "name":"Default"
+               },
+               "name":"admin"
+            }
+         }
+      }
+   }
+
+   # Issue auth token for accessing via API.
+   $ curl -i -X POST -H "Content-Type: application/json" -d @./get_token.json http://192.168.121.170/identity/v3/auth/tokens
+   HTTP/1.1 201 CREATED
+   Date: Wed, 12 Apr 2023 07:22:44 GMT
+   Server: Apache/2.4.41 (Ubuntu)
+   Content-Type: application/json
+   Content-Length: 7469
+   X-Subject-Token: gAAAAABkNlxENR1WGpfgAe8g2Z4z5lCtwCsfUs5GTsg9mvYTMbG7S8HPIZep0vAGUnoPTj0_IYgMP-W1Y0vCDmWFQH7CSq1XWv3qNMd4aFnclk5sHuP1s0JtHSls7IQMM6zbn-FBYUSWTc9d783OSxYKXWqf3qo-CfFjPwrkmNzfkzgtlogkeA4
+   Vary: X-Auth-Token
+   x-openstack-request-id: req-e94aa763-9578-424b-affb-7ccab80db72c
+   Connection: close
+
+   {"token": {"methods": ["password"], "user": {"domain": {"id": "default", "name": "Default"}, "id": "3e2f3db203e347bfa2197f8fdd038f39", "name": "admin", "password_expires_at": null}, "audit_ids": ["1pgGosVvR4azhw29woKvDw"], "expires_at": "2023-04-12T08:22:44.000000Z", "issued_at": "2023-04-12T07:22:44.000000Z", "project": {"domain": {"id": "default", "name": "Default"}, "id": "5af8bd4dd4ed4285ab1d45a95833cc67", "name": "admin"}, "is_domain": false, "roles": [{"id": "a039c220711049e0b77eac89a1504a81", "name": "reader"}, {"id": "57051bcc1fc24eb4875852a8ab32eae7", "name": "member"}, {"id": "029ea703a2534199a412b18cc5bfa31d", "name": "admin"}], "catalog": [{"endpoints": [{"id": "29307c3ec2f94553acbd7682e32602ba", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170:8989/v2", "region": "RegionOne"}, {"id": "45e5c5f2d4ce4841a980e29e6d3713f7", "interface": "internal", "region_id": "RegionOne", "url": "http://192.168.121.170:8989/v2", "region": "RegionOne"}, {"id": "8d79900575e3490cb71ad6fe5ff0697c", "interface": "admin", "region_id": "RegionOne", "url": "http://192.168.121.170:8989/v2", "region": "RegionOne"}], "id": "00c00313624d4c74aeaa55285e2c553d", "type": "workflowv2", "name": "mistral"}, {"endpoints": [{"id": "aafc7809d8a943d39d20490442ed87fa", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170/compute/v2/5af8bd4dd4ed4285ab1d45a95833cc67", "region": "RegionOne"}], "id": "131f57b38d7e4874a18446ab50f3f37b", "type": "compute_legacy", "name": "nova_legacy"}, {"endpoints": [{"id": "e1cd2199468a4486a4df2ffe884b9026", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170:12347/v1", "region": "RegionOne"}], "id": "4dc58229363a4e5fa3d863357554678b", "type": "maintenance", "name": "fenix"}, {"endpoints": [], "id": "53b114aa4c2b4cf7b642ef99e767e58c", "type": "kuryr-kubernetes", "name": "kuryr-kubernetes"}, {"endpoints": [{"id": "1156b12e11a04ac2ab4a674976e8bb3e", "interface": "admin", "region_id": "RegionOne", "url": "http://192.168.121.170/metric", "region": "RegionOne"}, {"id": "191a35e87d824e72819c28790d6dac8d", "interface": "internal", "region_id": "RegionOne", "url": "http://192.168.121.170/metric", "region": "RegionOne"}, {"id": "99016e127b7d4f8483636f5531d994c9", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170/metric", "region": "RegionOne"}], "id": "5d483e864b484f76a46266dc5640386b", "type": "metric", "name": "gnocchi"}, {"endpoints": [{"id": "d5ce793eee434288901795720538f811", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170/volume/v3/5af8bd4dd4ed4285ab1d45a95833cc67", "region": "RegionOne"}], "id": "5e5f3dc6efa545569f67f453a05ac234", "type": "block-storage", "name": "cinder"}, {"endpoints": [{"id": "6ed501fde45047fe9a3684cc791df953", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170/load-balancer", "region": "RegionOne"}], "id": "8b06952a46f3448f9e88daccee3212a9", "type": "load-balancer", "name": "octavia"}, {"endpoints": [{"id": "548133af931b4c0ea8d015dbb67d4388", "interface": "internal", "region_id": "RegionOne", "url": "http://192.168.121.170/identity", "region": "RegionOne"}, {"id": "58f0b35802f442f4997318017a37cae9", "interface": "admin", "region_id": "RegionOne", "url": "http://192.168.121.170/identity", "region": "RegionOne"}, {"id": "c062a6ce0ab54ee699b863b38e15c50a", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170/identity", "region": "RegionOne"}], "id": "8ee29bc9aa6d4ddda69f7810b0c52ff5", "type": "identity", "name": "keystone"}, {"endpoints": [{"id": "7fdd1dac28874280928e6c9313b4a415", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170/heat-api-cfn/v1", "region": "RegionOne"}], "id": "9605cce5cdad422f8934c891ac840fa7", "type": "cloudformation", "name": "heat-cfn"}, {"endpoints": [{"id": "53ed393173944da3bfac9d482907b65e", "interface": "internal", "region_id": "RegionOne", "url": "http://192.168.121.170:9890/", "region": "RegionOne"}, {"id": "d6891cda1327453aa28155fd18e8596e", "interface": "admin", "region_id": "RegionOne", "url": "http://192.168.121.170:9890/", "region": "RegionOne"}, {"id": "fef7c489ad544e708d9c85e4a801e344", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170:9890/", "region": "RegionOne"}], "id": "a2c67888fc7a4f55a4001cd807293daf", "type": "nfv-orchestration", "name": "tacker"}, {"endpoints": [{"id": "413321647af94f2fb948e59c76bc2b87", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170/placement", "region": "RegionOne"}], "id": "aa649b2a9f8644a184fd6857400328ab", "type": "placement", "name": "placement"}, {"endpoints": [{"id": "671a41088c4841d18c58db9ac8a97314", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170:9696/networking", "region": "RegionOne"}], "id": "b1abe9867d07457dbc7c84f37906300a", "type": "network", "name": "neutron"}, {"endpoints": [{"id": "ba3d670defb748a1b23a4697a7998fb7", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170/volume/v3/5af8bd4dd4ed4285ab1d45a95833cc67", "region": "RegionOne"}], "id": "b481211f6e5742f1913148ab157259ee", "type": "volumev3", "name": "cinderv3"}, {"endpoints": [{"id": "7eca8bcad7df40cda721a960a838f908", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170/heat-api/v1/5af8bd4dd4ed4285ab1d45a95833cc67", "region": "RegionOne"}], "id": "c7c437d0564f428db112516273ca2c0b", "type": "orchestration", "name": "heat"}, {"endpoints": [{"id": "2be3a59b29c04cf7a359ec8b973d334a", "interface": "admin", "region_id": "RegionOne", "url": "http://192.168.121.170/key-manager", "region": "RegionOne"}, {"id": "4258ac8e29084b5a82a48e55b2189284", "interface": "internal", "region_id": "RegionOne", "url": "http://192.168.121.170/key-manager", "region": "RegionOne"}, {"id": "d463ed0ea12a4b44974b9239d2c14a49", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170/key-manager", "region": "RegionOne"}], "id": "d411db3bd28a44f7b7c0ae53d3f5bb7b", "type": "key-manager", "name": "barbican"}, {"endpoints": [{"id": "05dea080ccc8493b9aa6a22bfe9d7b2b", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170/compute/v2.1", "region": "RegionOne"}], "id": "d69f1f3988ee4809a9bb496f4f312bbd", "type": "compute", "name": "nova"}, {"endpoints": [{"id": "86e8d9e1998b4b9caf503dc58fc1297a", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170/reservation/v1", "region": "RegionOne"}], "id": "d81b4911762a4c419f3816c36adcdac1", "type": "reservation", "name": "blazar"}, {"endpoints": [{"id": "0b0195a6580d48bf94eed97a35603756", "interface": "admin", "region_id": "RegionOne", "url": "http://192.168.121.170:8042", "region": "RegionOne"}, {"id": "67d676a732bb4c67abcdc5f433e5b3aa", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170:8042", "region": "RegionOne"}, {"id": "f753f73beed8463fa3f594c29911c332", "interface": "internal", "region_id": "RegionOne", "url": "http://192.168.121.170:8042", "region": "RegionOne"}], "id": "ddd00c0c78b448438bb925776fdbb350", "type": "alarming", "name": "aodh"}, {"endpoints": [{"id": "a39c85e31b3446239f958cc96c634216", "interface": "public", "region_id": "RegionOne", "url": "http://192.168.121.170/image", "region": "RegionOne"}], "id": "fe0a0e3590fa4fa69f395bcdc47f1241", "type": "image", "name": "glance"}]}}
+
+   # Set ``X-Subject-Token`` to environment variables as ``TOKEN``.
+   $ TOKEN=gAAAAABkNlxENR1WGpfgAe8g2Z4z5lCtwCsfUs5GTsg9mvYTMbG7S8HPIZep0vAGUnoPTj0_IYgMP-W1Y0vCDmWFQH7CSq1XWv3qNMd4aFnclk5sHuP1s0JtHSls7IQMM6zbn-FBYUSWTc9d783OSxYKXWqf3qo-CfFjPwrkmNzfkzgtlogkeA4
+
 VIM
 ~~~
 Register OpenStack VIM (Virtualized Infrastructure Manager) by following procedure below.
@@ -26,7 +88,7 @@
    .. code:: bash
 
       $ cat vim_config.yaml
-      auth_url: 'http://192.168.121.170/v3'
+      auth_url: 'http://192.168.121.170/identity'
       username: 'admin'
       password: 'devstack'
       project_name: 'admin'
@@ -36,21 +98,46 @@
 
 2. Register VIM to Tacker by running following command.
 
-   .. code:: bash
+   * via CLI command:
 
-      $ source ${devstack_dir}/openrc admin admin
-      $ openstack vim register --config-file vim_config.yaml vim-openstack
+     .. code:: bash
+
+        $ openstack vim register --config-file vim_config.yaml vim-openstack
+
+   * via API:
+
+     .. code:: bash
+
+        $ TACKER_ENDPOINT=http://192.168.121.170:9890
+        $ OS_ENDPOINT=https://192.168.121.170/identity
+
+        $ curl -g -i -X POST ${TACKER_ENDPOINT}/v1.0/vims \
+               -H "Accept: application/json" -H "Content-Type: application/json" -H "X-Auth-Token: $TOKEN" \
+               -d '{"vim": {"auth_url": "'${OS_ENDPOINT}'", "type": "openstack", "vim_project": {"name": "admin", "project_domain_name": "Default"},
+                    "auth_cred": {"username": "admin", "password": "devstack", "user_domain_name": "Default", "cert_verify": "False"},
+                    "name": "vim-openstack", "is_default": false}}'
 
 3. Check the registered VIM status is ``REACHABLE``.
 
-   .. code:: bash
+   * via CLI command:
 
-      $ openstack vim list
-      +--------------------------------------+----------------+----------------------------------+------------+------------+-----------+
-      | ID                                   | Name           | Tenant_id                        | Type       | Is Default | Status    |
-      +--------------------------------------+----------------+----------------------------------+------------+------------+-----------+
-      | d8d886e4-fd98-4493-81e2-0e2b9991d629 | vim-openstack  | a51290751e094e608ad1e5e251b8cd39 | openstack  | True       | REACHABLE |
-      +--------------------------------------+----------------+----------------------------------+------------+------------+-----------+
+     .. code:: bash
+
+        $ openstack vim list
+        +--------------------------------------+----------------+----------------------------------+------------+------------+-----------+
+        | ID                                   | Name           | Tenant_id                        | Type       | Is Default | Status    |
+        +--------------------------------------+----------------+----------------------------------+------------+------------+-----------+
+        | d8d886e4-fd98-4493-81e2-0e2b9991d629 | vim-openstack  | a51290751e094e608ad1e5e251b8cd39 | openstack  | True       | REACHABLE |
+        +--------------------------------------+----------------+----------------------------------+------------+------------+-----------+
+
+   * via API:
+
+     .. code:: bash
+
+        $ curl -g -X GET ${TACKER_ENDPOINT}/v1.0/vims \
+                  -H "Accept: application/json" -H "X-Auth-Token: $TOKEN" \
+                  | jq -r '.vims[] | .id + ": " + .status'
+        d8d886e4-fd98-4493-81e2-0e2b9991d629: REACHABLE
 
 VNF Package
 ~~~~~~~~~~~
@@ -75,68 +162,92 @@
 
 2. Create and Upload VNF Package.
 
-   .. code:: bash
+   * via CLI command:
 
-      $ openstack vnf package create
-      +-------------------+-------------------------------------------------------------------------------------------------+
-      | Field             | Value                                                                                           |
-      +-------------------+-------------------------------------------------------------------------------------------------+
-      | ID                | 9f10134f-90ae-4e71-bfdc-de6593552de8                                                            |
-      | Links             | {                                                                                               |
-      |                   |     "self": {                                                                                   |
-      |                   |         "href": "/vnfpkgm/v1/vnf_packages/9f10134f-90ae-4e71-bfdc-de6593552de8"                 |
-      |                   |     },                                                                                          |
-      |                   |     "packageContent": {                                                                         |
-      |                   |         "href": "/vnfpkgm/v1/vnf_packages/9f10134f-90ae-4e71-bfdc-de6593552de8/package_content" |
-      |                   |     }                                                                                           |
-      |                   | }                                                                                               |
-      | Onboarding State  | CREATED                                                                                         |
-      | Operational State | DISABLED                                                                                        |
-      | Usage State       | NOT_IN_USE                                                                                      |
-      | User Defined Data | {}                                                                                              |
-      +-------------------+-------------------------------------------------------------------------------------------------+
+     .. code:: bash
 
-      $ openstack vnf package upload --path sample_vnf_package.zip 9f10134f-90ae-4e71-bfdc-de6593552de8
-      Upload request for VNF package 9f10134f-90ae-4e71-bfdc-de6593552de8 has been accepted.
+        $ openstack vnf package create
+        +-------------------+-------------------------------------------------------------------------------------------------+
+        | Field             | Value                                                                                           |
+        +-------------------+-------------------------------------------------------------------------------------------------+
+        | ID                | 9f10134f-90ae-4e71-bfdc-de6593552de8                                                            |
+        | Links             | {                                                                                               |
+        |                   |     "self": {                                                                                   |
+        |                   |         "href": "/vnfpkgm/v1/vnf_packages/9f10134f-90ae-4e71-bfdc-de6593552de8"                 |
+        |                   |     },                                                                                          |
+        |                   |     "packageContent": {                                                                         |
+        |                   |         "href": "/vnfpkgm/v1/vnf_packages/9f10134f-90ae-4e71-bfdc-de6593552de8/package_content" |
+        |                   |     }                                                                                           |
+        |                   | }                                                                                               |
+        | Onboarding State  | CREATED                                                                                         |
+        | Operational State | DISABLED                                                                                        |
+        | Usage State       | NOT_IN_USE                                                                                      |
+        | User Defined Data | {}                                                                                              |
+        +-------------------+-------------------------------------------------------------------------------------------------+
+  
+        $ openstack vnf package upload --path sample_vnf_package.zip 9f10134f-90ae-4e71-bfdc-de6593552de8
+        Upload request for VNF package 9f10134f-90ae-4e71-bfdc-de6593552de8 has been accepted.
+
+
+   * via API:
+
+     .. code:: bash
+
+        $ VNFP_ID=$(curl -s -X POST ${TACKER_ENDPOINT}/vnfpkgm/v1/vnf_packages \
+                    -H "Content-type: application/json" -H "X-Auth-Token:$TOKEN" -d '{}' | jq -r '.id')
+
+        $ VNFP_CONTENTS=./sample_vnf_package.zip
+
+        $ curl -i -X PUT ${TACKER_ENDPOINT}/vnfpkgm/v1/vnf_packages/$VNFP_ID/package_content \
+               -H "Content-type: application/zip" -H "X-Auth-Token:$TOKEN" -H "Accept:application/zip" \
+               -F vnf_package_content=@${VNFP_CONTENTS}
 
 Deployment Procedure
 --------------------
 
-.. note::
-
-   This procedure uses the CLI available by installing python-tackerclient.
-   If you want to process with RESTfull API, see the :doc:`api-docs` for more information.
-
 Create
 ~~~~~~
 Create a VNF Instance by specifying the VNFD ID. The VNFD ID is the value defined in the VNFD file and can be found in the :command:`openstack vnf package show` command.
 
-.. code:: bash
+* via CLI command:
 
-   $ openstack vnflcm create b1bb0ce7-ebca-4fa7-95ed-4840d70a1177
-   +-----------------------------+------------------------------------------------------------------------------------------------------------------+
-   | Field                       | Value                                                                                                            |
-   +-----------------------------+------------------------------------------------------------------------------------------------------------------+
-   | ID                          | fba5bda0-0b52-4d80-bffb-709200baf1e3                                                                             |
-   | Instantiation State         | NOT_INSTANTIATED                                                                                                 |
-   | Links                       | {                                                                                                                |
-   |                             |     "self": {                                                                                                    |
-   |                             |         "href": "http://localhost:9890/vnflcm/v1/vnf_instances/fba5bda0-0b52-4d80-bffb-709200baf1e3"             |
-   |                             |     },                                                                                                           |
-   |                             |     "instantiate": {                                                                                             |
-   |                             |         "href": "http://localhost:9890/vnflcm/v1/vnf_instances/fba5bda0-0b52-4d80-bffb-709200baf1e3/instantiate" |
-   |                             |     }                                                                                                            |
-   |                             | }                                                                                                                |
-   | VNF Configurable Properties |                                                                                                                  |
-   | VNF Instance Description    | None                                                                                                             |
-   | VNF Instance Name           | vnf-fba5bda0-0b52-4d80-bffb-709200baf1e3                                                                         |
-   | VNF Product Name            | Sample VNF                                                                                                       |
-   | VNF Provider                | Company                                                                                                          |
-   | VNF Software Version        | 1.0                                                                                                              |
-   | VNFD ID                     | b1bb0ce7-ebca-4fa7-95ed-4840d70a1177                                                                             |
-   | VNFD Version                | 1.0                                                                                                              |
-   | vnfPkgId                    |                                                                                                                  |
-   +-----------------------------+------------------------------------------------------------------------------------------------------------------+
+  .. code:: bash
+
+     $ openstack vnflcm create b1bb0ce7-ebca-4fa7-95ed-4840d70a1177
+     +-----------------------------+------------------------------------------------------------------------------------------------------------------+
+     | Field                       | Value                                                                                                            |
+     +-----------------------------+------------------------------------------------------------------------------------------------------------------+
+     | ID                          | fba5bda0-0b52-4d80-bffb-709200baf1e3                                                                             |
+     | Instantiation State         | NOT_INSTANTIATED                                                                                                 |
+     | Links                       | {                                                                                                                |
+     |                             |     "self": {                                                                                                    |
+     |                             |         "href": "http://localhost:9890/vnflcm/v1/vnf_instances/fba5bda0-0b52-4d80-bffb-709200baf1e3"             |
+     |                             |     },                                                                                                           |
+     |                             |     "instantiate": {                                                                                             |
+     |                             |         "href": "http://localhost:9890/vnflcm/v1/vnf_instances/fba5bda0-0b52-4d80-bffb-709200baf1e3/instantiate" |
+     |                             |     }                                                                                                            |
+     |                             | }                                                                                                                |
+     | VNF Configurable Properties |                                                                                                                  |
+     | VNF Instance Description    | None                                                                                                             |
+     | VNF Instance Name           | vnf-fba5bda0-0b52-4d80-bffb-709200baf1e3                                                                         |
+     | VNF Product Name            | Sample VNF                                                                                                       |
+     | VNF Provider                | Company                                                                                                          |
+     | VNF Software Version        | 1.0                                                                                                              |
+     | VNFD ID                     | b1bb0ce7-ebca-4fa7-95ed-4840d70a1177                                                                             |
+     | VNFD Version                | 1.0                                                                                                              |
+     | vnfPkgId                    |                                                                                                                  |
+     +-----------------------------+------------------------------------------------------------------------------------------------------------------+
+
+* via API:
+
+  .. code:: bash
+
+     $ VNFD_ID=$(curl -s -X GET ${TACKER_ENDPOINT}/vnfpkgm/v1/vnf_packages/$VNFP_ID \
+                      -H "X-Auth-Token:$TOKEN" | jq -r '.vnfdId')
+
+     $ VNF_INST_ID=$(curl -sS -X POST ${TACKER_ENDPOINT}/vnflcm/v1/vnf_instances \
+                          -H "Content-type: application/json" -H "X-Auth-Token:$TOKEN" \
+                          -d '{ "vnfdId": "'$VNFD_ID'"}' | jq -r '.id')
 
 Instantiate
 ~~~~~~~~~~~
@@ -192,8 +303,20 @@
      }
    }
 
-   $ openstack vnflcm instantiate b0915924-7e04-4c16-b229-d3dfcc366eee input_param.json
-   Instantiate request for VNF Instance b0915924-7e04-4c16-b229-d3dfcc366eee has been accepted.
+* via CLI command:
+
+  .. code:: bash
+
+     $ openstack vnflcm instantiate b0915924-7e04-4c16-b229-d3dfcc366eee input_param.json
+     Instantiate request for VNF Instance b0915924-7e04-4c16-b229-d3dfcc366eee has been accepted.
+
+* via API:
+
+  .. code:: bash
+
+     $ curl -i -X POST ${TACKER_ENDPOINT}/vnflcm/v1/vnf_instances/$VNF_INST_ID/instantiate \
+            -H "Content-type: application/json" -H "X-Auth-Token:$TOKEN" \
+            -d @./input_param.json
 
 You can verify that the deployment was successful in the following ways:
 
@@ -202,175 +325,225 @@
    * ``Instantiation State`` became ``INSTANTIATED``.
    * Deployed resource information is stored in ``vnfcResourceInfo`` of ``Instantiated Vnf Info``.
 
-   .. code:: bash
+   * via CLI command:
 
-      $ openstack vnflcm show fba5bda0-0b52-4d80-bffb-709200baf1e3
-      +-----------------------------+----------------------------------------------------------------------------------------------------------------------+
-      | Field                       | Value                                                                                                                |
-      +-----------------------------+----------------------------------------------------------------------------------------------------------------------+
-      | ID                          | fba5bda0-0b52-4d80-bffb-709200baf1e3                                                                                 |
-      | Instantiated Vnf Info       | {                                                                                                                    |
-      |                             |     "flavourId": "simple",                                                                                           |
-      |                             |     "vnfState": "STARTED",                                                                                           |
-      |                             |     "extCpInfo": [                                                                                                   |
-      |                             |         {                                                                                                            |
-      |                             |             "id": "4e9cda91-f625-4790-8efb-273b3fbd03a1",                                                            |
-      |                             |             "cpdId": "CP1",                                                                                          |
-      |                             |             "extLinkPortId": null,                                                                                   |
-      |                             |             "associatedVnfcCpId": "65676b39-1e80-435f-997d-217963d25298",                                            |
-      |                             |             "cpProtocolInfo": [                                                                                      |
-      |                             |                 {                                                                                                    |
-      |                             |                     "layerProtocol": "IP_OVER_ETHERNET",                                                             |
-      |                             |                     "ipOverEthernet": {                                                                              |
-      |                             |                         "macAddress": null,                                                                          |
-      |                             |                         "ipAddresses": [                                                                             |
-      |                             |                             {                                                                                        |
-      |                             |                                 "type": "IPV4",                                                                      |
-      |                             |                                 "subnetId": "309614e6-4aab-4424-977f-fd9c8dfe493e",                                  |
-      |                             |                                 "isDynamic": true,                                                                   |
-      |                             |                                 "addresses": []                                                                      |
-      |                             |                             }                                                                                        |
-      |                             |                         ]                                                                                            |
-      |                             |                     }                                                                                                |
-      |                             |                 }                                                                                                    |
-      |                             |             ]                                                                                                        |
-      |                             |         }                                                                                                            |
-      |                             |     ],                                                                                                               |
-      |                             |     "extVirtualLinkInfo": [                                                                                          |
-      |                             |         {                                                                                                            |
-      |                             |             "id": "test1",                                                                                           |
-      |                             |             "resourceHandle": {                                                                                      |
-      |                             |                 "vimConnectionId": null,                                                                             |
-      |                             |                 "resourceId": "0e1cc46a-6808-4738-8b84-9e99a775c9eb",                                                |
-      |                             |                 "vimLevelResourceType": null                                                                         |
-      |                             |             }                                                                                                        |
-      |                             |         }                                                                                                            |
-      |                             |     ],                                                                                                               |
-      |                             |     "vnfcResourceInfo": [                                                                                            |
-      |                             |         {                                                                                                            |
-      |                             |             "id": "65676b39-1e80-435f-997d-217963d25298",                                                            |
-      |                             |             "vduId": "VDU1",                                                                                         |
-      |                             |             "computeResource": {                                                                                     |
-      |                             |                 "vimConnectionId": "d8d886e4-fd98-4493-81e2-0e2b9991d629",                                           |
-      |                             |                 "resourceId": "0f0ee6b9-cf6c-41c7-a36c-78d41fcba99c",                                                |
-      |                             |                 "vimLevelResourceType": "OS::Nova::Server"                                                           |
-      |                             |             },                                                                                                       |
-      |                             |             "storageResourceIds": [],                                                                                |
-      |                             |             "vnfcCpInfo": [                                                                                          |
-      |                             |                 {                                                                                                    |
-      |                             |                     "id": "a3da58ce-039d-42ee-9569-a0e2a9adf9bb",                                                    |
-      |                             |                     "cpdId": "CP1",                                                                                  |
-      |                             |                     "vnfExtCpId": null,                                                                              |
-      |                             |                     "vnfLinkPortId": "d61dcdf1-d5c6-4add-8b0f-0095b00908cd",                                         |
-      |                             |                     "cpProtocolInfo": [                                                                              |
-      |                             |                         {                                                                                            |
-      |                             |                             "layerProtocol": "IP_OVER_ETHERNET",                                                     |
-      |                             |                             "ipOverEthernet": {                                                                      |
-      |                             |                                 "macAddress": null,                                                                  |
-      |                             |                                 "ipAddresses": [                                                                     |
-      |                             |                                     {                                                                                |
-      |                             |                                         "type": "IPV4",                                                              |
-      |                             |                                         "subnetId": "309614e6-4aab-4424-977f-fd9c8dfe493e",                          |
-      |                             |                                         "isDynamic": true,                                                           |
-      |                             |                                         "addresses": []                                                              |
-      |                             |                                     }                                                                                |
-      |                             |                                 ]                                                                                    |
-      |                             |                             }                                                                                        |
-      |                             |                         }                                                                                            |
-      |                             |                     ]                                                                                                |
-      |                             |                 }                                                                                                    |
-      |                             |             ]                                                                                                        |
-      |                             |         }                                                                                                            |
-      |                             |     ],                                                                                                               |
-      |                             |     "vnfVirtualLinkResourceInfo": [                                                                                  |
-      |                             |         {                                                                                                            |
-      |                             |             "id": "006531d5-7bb9-472d-9243-7dd415ca9839",                                                            |
-      |                             |             "vnfVirtualLinkDescId": "internalVL1",                                                                   |
-      |                             |             "networkResource": {                                                                                     |
-      |                             |                 "vimConnectionId": null,                                                                             |
-      |                             |                 "resourceId": "",                                                                                    |
-      |                             |                 "vimLevelResourceType": null                                                                         |
-      |                             |             },                                                                                                       |
-      |                             |             "vnfLinkPorts": [                                                                                        |
-      |                             |                 {                                                                                                    |
-      |                             |                     "id": "11d2a97d-884d-4943-9539-bc6c8e4e9e2b",                                                    |
-      |                             |                     "resourceHandle": {                                                                              |
-      |                             |                         "vimConnectionId": "d8d886e4-fd98-4493-81e2-0e2b9991d629",                                   |
-      |                             |                         "resourceId": "601c9ce5-91df-4636-9fc3-0ae979781d9a",                                        |
-      |                             |                         "vimLevelResourceType": "OS::Neutron::Port"                                                  |
-      |                             |                     },                                                                                               |
-      |                             |                     "cpInstanceId": "a3da58ce-039d-42ee-9569-a0e2a9adf9bb"                                           |
-      |                             |                 }                                                                                                    |
-      |                             |             ]                                                                                                        |
-      |                             |         },                                                                                                           |
-      |                             |         {                                                                                                            |
-      |                             |             "id": "3a9607a4-0d5a-42da-aca3-2c471544ee86",                                                            |
-      |                             |             "vnfVirtualLinkDescId": "test1",                                                                         |
-      |                             |             "networkResource": {                                                                                     |
-      |                             |                 "vimConnectionId": null,                                                                             |
-      |                             |                 "resourceId": "0e1cc46a-6808-4738-8b84-9e99a775c9eb",                                                |
-      |                             |                 "vimLevelResourceType": "OS::Neutron::Net"                                                           |
-      |                             |             },                                                                                                       |
-      |                             |             "vnfLinkPorts": [                                                                                        |
-      |                             |                 {                                                                                                    |
-      |                             |                     "id": "d61dcdf1-d5c6-4add-8b0f-0095b00908cd",                                                    |
-      |                             |                     "resourceHandle": {                                                                              |
-      |                             |                         "vimConnectionId": null,                                                                     |
-      |                             |                         "resourceId": "",                                                                            |
-      |                             |                         "vimLevelResourceType": null                                                                 |
-      |                             |                     },                                                                                               |
-      |                             |                     "cpInstanceId": "a3da58ce-039d-42ee-9569-a0e2a9adf9bb"                                           |
-      |                             |                 }                                                                                                    |
-      |                             |             ]                                                                                                        |
-      |                             |         }                                                                                                            |
-      |                             |     ],                                                                                                               |
-      |                             |     "vnfcInfo": [                                                                                                    |
-      |                             |         {                                                                                                            |
-      |                             |             "id": "341f2d8c-b53f-4d4b-b7f2-2f1726355803",                                                            |
-      |                             |             "vduId": "VDU1",                                                                                         |
-      |                             |             "vnfcState": "STARTED"                                                                                   |
-      |                             |         }                                                                                                            |
-      |                             |     ],                                                                                                               |
-      |                             |     "additionalParams": {                                                                                            |
-      |                             |         "lcm-operation-user-data": "./UserData/lcm_user_data.py",                                                    |
-      |                             |         "lcm-operation-user-data-class": "SampleUserData"                                                            |
-      |                             |     }                                                                                                                |
-      |                             | }                                                                                                                    |
-      | Instantiation State         | INSTANTIATED                                                                                                         |
-      | Links                       | {                                                                                                                    |
-      |                             |     "self": {                                                                                                        |
-      |                             |         "href": "http://localhost:9890/vnflcm/v1/vnf_instances/fba5bda0-0b52-4d80-bffb-709200baf1e3"                 |
-      |                             |     },                                                                                                               |
-      |                             |     "terminate": {                                                                                                   |
-      |                             |         "href": "http://localhost:9890/vnflcm/v1/vnf_instances/fba5bda0-0b52-4d80-bffb-709200baf1e3/terminate"       |
-      |                             |     },                                                                                                               |
-      |                             |     "heal": {                                                                                                        |
-      |                             |         "href": "http://localhost:9890/vnflcm/v1/vnf_instances/fba5bda0-0b52-4d80-bffb-709200baf1e3/heal"            |
-      |                             |     },                                                                                                               |
-      |                             |     "changeExtConn": {                                                                                               |
-      |                             |         "href": "http://localhost:9890/vnflcm/v1/vnf_instances/fba5bda0-0b52-4d80-bffb-709200baf1e3/change_ext_conn" |
-      |                             |     }                                                                                                                |
-      |                             | }                                                                                                                    |
-      | VIM Connection Info         | [                                                                                                                    |
-      |                             |     {                                                                                                                |
-      |                             |         "id": "e24f9796-a8e9-4cb0-85ce-5920dcddafa1",                                                                |
-      |                             |         "vimId": "d8d886e4-fd98-4493-81e2-0e2b9991d629",                                                             |
-      |                             |         "vimType": "openstack",                                                                                      |
-      |                             |         "interfaceInfo": {},                                                                                         |
-      |                             |         "accessInfo": {},                                                                                            |
-      |                             |         "extra": {}                                                                                                  |
-      |                             |     }                                                                                                                |
-      |                             | ]                                                                                                                    |
-      | VNF Configurable Properties |                                                                                                                      |
-      | VNF Instance Description    | None                                                                                                                 |
-      | VNF Instance Name           | vnf-fba5bda0-0b52-4d80-bffb-709200baf1e3                                                                             |
-      | VNF Product Name            | Sample VNF                                                                                                           |
-      | VNF Provider                | Company                                                                                                              |
-      | VNF Software Version        | 1.0                                                                                                                  |
-      | VNFD ID                     | b1bb0ce7-ebca-4fa7-95ed-4840d70a1177                                                                                 |
-      | VNFD Version                | 1.0                                                                                                                  |
-      | vnfPkgId                    |                                                                                                                      |
-      +-----------------------------+----------------------------------------------------------------------------------------------------------------------+
+     .. code:: bash
+
+        $ openstack vnflcm show fba5bda0-0b52-4d80-bffb-709200baf1e3
+        +-----------------------------+----------------------------------------------------------------------------------------------------------------------+
+        | Field                       | Value                                                                                                                |
+        +-----------------------------+----------------------------------------------------------------------------------------------------------------------+
+        | ID                          | fba5bda0-0b52-4d80-bffb-709200baf1e3                                                                                 |
+        | Instantiated Vnf Info       | {                                                                                                                    |
+        |                             |     "flavourId": "simple",                                                                                           |
+        |                             |     "vnfState": "STARTED",                                                                                           |
+        |                             |     "extCpInfo": [                                                                                                   |
+        |                             |         {                                                                                                            |
+        |                             |             "id": "4e9cda91-f625-4790-8efb-273b3fbd03a1",                                                            |
+        |                             |             "cpdId": "CP1",                                                                                          |
+        |                             |             "extLinkPortId": null,                                                                                   |
+        |                             |             "associatedVnfcCpId": "65676b39-1e80-435f-997d-217963d25298",                                            |
+        |                             |             "cpProtocolInfo": [                                                                                      |
+        |                             |                 {                                                                                                    |
+        |                             |                     "layerProtocol": "IP_OVER_ETHERNET",                                                             |
+        |                             |                     "ipOverEthernet": {                                                                              |
+        |                             |                         "macAddress": null,                                                                          |
+        |                             |                         "ipAddresses": [                                                                             |
+        |                             |                             {                                                                                        |
+        |                             |                                 "type": "IPV4",                                                                      |
+        |                             |                                 "subnetId": "309614e6-4aab-4424-977f-fd9c8dfe493e",                                  |
+        |                             |                                 "isDynamic": true,                                                                   |
+        |                             |                                 "addresses": []                                                                      |
+        |                             |                             }                                                                                        |
+        |                             |                         ]                                                                                            |
+        |                             |                     }                                                                                                |
+        |                             |                 }                                                                                                    |
+        |                             |             ]                                                                                                        |
+        |                             |         }                                                                                                            |
+        |                             |     ],                                                                                                               |
+        |                             |     "extVirtualLinkInfo": [                                                                                          |
+        |                             |         {                                                                                                            |
+        |                             |             "id": "test1",                                                                                           |
+        |                             |             "resourceHandle": {                                                                                      |
+        |                             |                 "vimConnectionId": null,                                                                             |
+        |                             |                 "resourceId": "0e1cc46a-6808-4738-8b84-9e99a775c9eb",                                                |
+        |                             |                 "vimLevelResourceType": null                                                                         |
+        |                             |             }                                                                                                        |
+        |                             |         }                                                                                                            |
+        |                             |     ],                                                                                                               |
+        |                             |     "vnfcResourceInfo": [                                                                                            |
+        |                             |         {                                                                                                            |
+        |                             |             "id": "65676b39-1e80-435f-997d-217963d25298",                                                            |
+        |                             |             "vduId": "VDU1",                                                                                         |
+        |                             |             "computeResource": {                                                                                     |
+        |                             |                 "vimConnectionId": "d8d886e4-fd98-4493-81e2-0e2b9991d629",                                           |
+        |                             |                 "resourceId": "0f0ee6b9-cf6c-41c7-a36c-78d41fcba99c",                                                |
+        |                             |                 "vimLevelResourceType": "OS::Nova::Server"                                                           |
+        |                             |             },                                                                                                       |
+        |                             |             "storageResourceIds": [],                                                                                |
+        |                             |             "vnfcCpInfo": [                                                                                          |
+        |                             |                 {                                                                                                    |
+        |                             |                     "id": "a3da58ce-039d-42ee-9569-a0e2a9adf9bb",                                                    |
+        |                             |                     "cpdId": "CP1",                                                                                  |
+        |                             |                     "vnfExtCpId": null,                                                                              |
+        |                             |                     "vnfLinkPortId": "d61dcdf1-d5c6-4add-8b0f-0095b00908cd",                                         |
+        |                             |                     "cpProtocolInfo": [                                                                              |
+        |                             |                         {                                                                                            |
+        |                             |                             "layerProtocol": "IP_OVER_ETHERNET",                                                     |
+        |                             |                             "ipOverEthernet": {                                                                      |
+        |                             |                                 "macAddress": null,                                                                  |
+        |                             |                                 "ipAddresses": [                                                                     |
+        |                             |                                     {                                                                                |
+        |                             |                                         "type": "IPV4",                                                              |
+        |                             |                                         "subnetId": "309614e6-4aab-4424-977f-fd9c8dfe493e",                          |
+        |                             |                                         "isDynamic": true,                                                           |
+        |                             |                                         "addresses": []                                                              |
+        |                             |                                     }                                                                                |
+        |                             |                                 ]                                                                                    |
+        |                             |                             }                                                                                        |
+        |                             |                         }                                                                                            |
+        |                             |                     ]                                                                                                |
+        |                             |                 }                                                                                                    |
+        |                             |             ]                                                                                                        |
+        |                             |         }                                                                                                            |
+        |                             |     ],                                                                                                               |
+        |                             |     "vnfVirtualLinkResourceInfo": [                                                                                  |
+        |                             |         {                                                                                                            |
+        |                             |             "id": "006531d5-7bb9-472d-9243-7dd415ca9839",                                                            |
+        |                             |             "vnfVirtualLinkDescId": "internalVL1",                                                                   |
+        |                             |             "networkResource": {                                                                                     |
+        |                             |                 "vimConnectionId": null,                                                                             |
+        |                             |                 "resourceId": "",                                                                                    |
+        |                             |                 "vimLevelResourceType": null                                                                         |
+        |                             |             },                                                                                                       |
+        |                             |             "vnfLinkPorts": [                                                                                        |
+        |                             |                 {                                                                                                    |
+        |                             |                     "id": "11d2a97d-884d-4943-9539-bc6c8e4e9e2b",                                                    |
+        |                             |                     "resourceHandle": {                                                                              |
+        |                             |                         "vimConnectionId": "d8d886e4-fd98-4493-81e2-0e2b9991d629",                                   |
+        |                             |                         "resourceId": "601c9ce5-91df-4636-9fc3-0ae979781d9a",                                        |
+        |                             |                         "vimLevelResourceType": "OS::Neutron::Port"                                                  |
+        |                             |                     },                                                                                               |
+        |                             |                     "cpInstanceId": "a3da58ce-039d-42ee-9569-a0e2a9adf9bb"                                           |
+        |                             |                 }                                                                                                    |
+        |                             |             ]                                                                                                        |
+        |                             |         },                                                                                                           |
+        |                             |         {                                                                                                            |
+        |                             |             "id": "3a9607a4-0d5a-42da-aca3-2c471544ee86",                                                            |
+        |                             |             "vnfVirtualLinkDescId": "test1",                                                                         |
+        |                             |             "networkResource": {                                                                                     |
+        |                             |                 "vimConnectionId": null,                                                                             |
+        |                             |                 "resourceId": "0e1cc46a-6808-4738-8b84-9e99a775c9eb",                                                |
+        |                             |                 "vimLevelResourceType": "OS::Neutron::Net"                                                           |
+        |                             |             },                                                                                                       |
+        |                             |             "vnfLinkPorts": [                                                                                        |
+        |                             |                 {                                                                                                    |
+        |                             |                     "id": "d61dcdf1-d5c6-4add-8b0f-0095b00908cd",                                                    |
+        |                             |                     "resourceHandle": {                                                                              |
+        |                             |                         "vimConnectionId": null,                                                                     |
+        |                             |                         "resourceId": "",                                                                            |
+        |                             |                         "vimLevelResourceType": null                                                                 |
+        |                             |                     },                                                                                               |
+        |                             |                     "cpInstanceId": "a3da58ce-039d-42ee-9569-a0e2a9adf9bb"                                           |
+        |                             |                 }                                                                                                    |
+        |                             |             ]                                                                                                        |
+        |                             |         }                                                                                                            |
+        |                             |     ],                                                                                                               |
+        |                             |     "vnfcInfo": [                                                                                                    |
+        |                             |         {                                                                                                            |
+        |                             |             "id": "341f2d8c-b53f-4d4b-b7f2-2f1726355803",                                                            |
+        |                             |             "vduId": "VDU1",                                                                                         |
+        |                             |             "vnfcState": "STARTED"                                                                                   |
+        |                             |         }                                                                                                            |
+        |                             |     ],                                                                                                               |
+        |                             |     "additionalParams": {                                                                                            |
+        |                             |         "lcm-operation-user-data": "./UserData/lcm_user_data.py",                                                    |
+        |                             |         "lcm-operation-user-data-class": "SampleUserData"                                                            |
+        |                             |     }                                                                                                                |
+        |                             | }                                                                                                                    |
+        | Instantiation State         | INSTANTIATED                                                                                                         |
+        | Links                       | {                                                                                                                    |
+        |                             |     "self": {                                                                                                        |
+        |                             |         "href": "http://localhost:9890/vnflcm/v1/vnf_instances/fba5bda0-0b52-4d80-bffb-709200baf1e3"                 |
+        |                             |     },                                                                                                               |
+        |                             |     "terminate": {                                                                                                   |
+        |                             |         "href": "http://localhost:9890/vnflcm/v1/vnf_instances/fba5bda0-0b52-4d80-bffb-709200baf1e3/terminate"       |
+        |                             |     },                                                                                                               |
+        |                             |     "heal": {                                                                                                        |
+        |                             |         "href": "http://localhost:9890/vnflcm/v1/vnf_instances/fba5bda0-0b52-4d80-bffb-709200baf1e3/heal"            |
+        |                             |     },                                                                                                               |
+        |                             |     "changeExtConn": {                                                                                               |
+        |                             |         "href": "http://localhost:9890/vnflcm/v1/vnf_instances/fba5bda0-0b52-4d80-bffb-709200baf1e3/change_ext_conn" |
+        |                             |     }                                                                                                                |
+        |                             | }                                                                                                                    |
+        | VIM Connection Info         | [                                                                                                                    |
+        |                             |     {                                                                                                                |
+        |                             |         "id": "e24f9796-a8e9-4cb0-85ce-5920dcddafa1",                                                                |
+        |                             |         "vimId": "d8d886e4-fd98-4493-81e2-0e2b9991d629",                                                             |
+        |                             |         "vimType": "openstack",                                                                                      |
+        |                             |         "interfaceInfo": {},                                                                                         |
+        |                             |         "accessInfo": {},                                                                                            |
+        |                             |         "extra": {}                                                                                                  |
+        |                             |     }                                                                                                                |
+        |                             | ]                                                                                                                    |
+        | VNF Configurable Properties |                                                                                                                      |
+        | VNF Instance Description    | None                                                                                                                 |
+        | VNF Instance Name           | vnf-fba5bda0-0b52-4d80-bffb-709200baf1e3                                                                             |
+        | VNF Product Name            | Sample VNF                                                                                                           |
+        | VNF Provider                | Company                                                                                                              |
+        | VNF Software Version        | 1.0                                                                                                                  |
+        | VNFD ID                     | b1bb0ce7-ebca-4fa7-95ed-4840d70a1177                                                                                 |
+        | VNFD Version                | 1.0                                                                                                                  |
+        | vnfPkgId                    |                                                                                                                      |
+        +-----------------------------+----------------------------------------------------------------------------------------------------------------------+
+
+   * via API:
+
+     .. code:: bash
+
+        $ curl -X GET ${TACKER_ENDPOINT}/vnflcm/v1/vnf_instances/$VNF_INST_ID \
+               -H "Content-type: application/json" -H "X-Auth-Token:$TOKEN" \
+               | jq -r '{ instantiationState: .instantiationState,
+                          vnfcResourceInfo: .instantiatedVnfInfo.vnfcResourceInfo }'
+        {
+          "instantiationState": "INSTANTIATED",
+          "vnfcResourceInfo": [
+            {
+              "id": "df202937-2bb8-40a9-8be0-a8aa5e2ec0ae",
+              "vduId": "VDU1",
+              "computeResource": {
+                "vimConnectionId": "d8d886e4-fd98-4493-81e2-0e2b9991d629",
+                "resourceId": "0f0ee6b9-cf6c-41c7-a36c-78d41fcba99c",
+                "vimLevelResourceType": "OS::Nova::Server"
+              },
+              "storageResourceIds": [],
+              "vnfcCpInfo": [
+                {
+                  "id": "a3da58ce-039d-42ee-9569-a0e2a9adf9bb",
+                  "cpdId": "CP1",
+                  "vnfExtCpId": null,
+                  "vnfLinkPortId": "d61dcdf1-d5c6-4add-8b0f-0095b00908cd",
+                  "cpProtocolInfo": [
+                    {
+                      "layerProtocol": "IP_OVER_ETHERNET",
+                      "ipOverEthernet": {
+                        "macAddress": null,
+                        "ipAddresses": [
+                          {
+                            "type": "IPV4",
+                            "subnetId": "309614e6-4aab-4424-977f-fd9c8dfe493e",
+                            "isDynamic": true,
+                            "addresses": []
+                          }
+                        ]
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          ]
+        }
 
 2. Verify the VM created successfully by :command:`openstack stack list/show` command or OpenStack Dashboard.
 
@@ -378,11 +551,22 @@
 ~~~~~~~~~
 Terminate a VNF by specifying the VNF Instance ID.
 
-.. code:: bash
+* via CLI command:
 
-   $ openstack vnflcm terminate fba5bda0-0b52-4d80-bffb-709200baf1e3
-   Terminate request for VNF Instance 'fba5bda0-0b52-4d80-bffb-709200baf1e3' has been accepted.
+  .. code:: bash
 
+     $ openstack vnflcm terminate fba5bda0-0b52-4d80-bffb-709200baf1e3
+     Terminate request for VNF Instance 'fba5bda0-0b52-4d80-bffb-709200baf1e3' has been accepted.
+
+* via API:
+
+  .. code:: bash
+
+     $ curl -i -X POST ${TACKER_ENDPOINT}/vnflcm/v1/vnf_instances/$VNF_INST_ID/terminate \
+            -H "Content-type: application/json" -H "X-Auth-Token:$TOKEN" \
+            -d '{"terminationType": "FORCEFUL"}'
 
 .. _ETSI NFV-SOL VNF Deployment: https://docs.openstack.org/tacker/latest/user/etsi_vnf_deployment_as_vm_with_user_data.html
+.. _Use Case Guide: https://docs.openstack.org/tacker/latest/user/etsi_use_case_guide.html
+.. _API Reference: https://docs.openstack.org/api-ref/nfv-orchestration
 .. _Prepare VNF Package: https://docs.openstack.org/tacker/latest/user/vnf-package.html