Retrieve All anchors for a given Dataspace

Issue-ID: CPS-8
Signed-off-by: puthuparambil.aditya <aditya.puthuparambil@bell.ca>
Change-Id: Idb2e4f83d390f078345e556d89781e0bf4a9a41f
diff --git a/cps-rest/docs/api/swagger/openapi.yml b/cps-rest/docs/api/swagger/openapi.yml
index 56a012f..441d5e5 100755
--- a/cps-rest/docs/api/swagger/openapi.yml
+++ b/cps-rest/docs/api/swagger/openapi.yml
@@ -61,12 +61,17 @@
         401:
           description: Unauthorized
           content: {}
+        400:
+          description: Bad Request
+          content: {}
         403:
           description: Forbidden
-          content: {}
         404:
           description: Not Found
           content: {}
+        204:
+          description: No Content
+          content: {}
     post:
       tags:
         - cps-rest