diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/CompositeStateSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/CompositeStateSpec.groovy
new file mode 100644
index 0000000..4f4cccf
--- /dev/null
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/CompositeStateSpec.groovy
@@ -0,0 +1,64 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2022 Nordix Foundation
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.api.inventory
+
+import com.fasterxml.jackson.databind.ObjectMapper
+import spock.lang.Specification
+
+import java.time.OffsetDateTime
+import java.time.ZoneOffset
+import java.time.format.DateTimeFormatter
+
+import static CompositeState.DataStores
+import static CompositeState.LockReason
+import static CompositeState.Operational
+import static CompositeState.Running
+import static org.onap.cps.ncmp.utils.TestUtils.getResourceFileContent
+import static org.springframework.util.StringUtils.trimAllWhitespace
+
+class CompositeStateSpec extends Specification {
+
+    def formattedDateAndTime = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSZ").format(OffsetDateTime.of(2022, 1, 1, 1, 1, 1, 1, ZoneOffset.MIN))
+    def objectMapper = new ObjectMapper()
+
+    def "Composite State Specification"() {
+        given: "a Composite State"
+            def compositeState = new CompositeState(cmhandleState: CmHandleState.ADVISED,
+                lockReason: LockReason.builder().reason('lock-reason').details("lock-misbehaving-details").build(),
+                lastUpdateTime: formattedDateAndTime.toString(),
+                dataSyncEnabled: false,
+                dataStores: dataStores())
+        when: 'it is represented as JSON'
+            def jsonStateModelAsString = objectMapper.writerWithDefaultPrettyPrinter().writeValueAsString(compositeState)
+        then: 'it matches expected state model as JSON'
+            def expectedStateModelAsjson = getResourceFileContent('expectedStateModel.json')
+            assert trimAllWhitespace(expectedStateModelAsjson) == trimAllWhitespace(jsonStateModelAsString)
+    }
+
+    def dataStores() {
+        DataStores.builder().operationalDataStore(Operational.builder()
+            .syncState('NONE_REQUESTED')
+            .lastSyncTime(formattedDateAndTime.toString()).build()).runningDataStore(Running.builder()
+            .syncState('NONE_REQUESTED')
+            .lastSyncTime(formattedDateAndTime.toString()).build())
+            .build()
+    }
+}
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/sync/CmHandleStateSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/sync/CmHandleStateSpec.groovy
index 923a903..bfc5c6f 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/sync/CmHandleStateSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/sync/CmHandleStateSpec.groovy
@@ -29,7 +29,7 @@
         given: 'a cm handle with an ADVISED state'
             def cmHandleState = CmHandleState.ADVISED
         when: 'the state transitions to the READY state'
-            cmHandleState = cmHandleState.ready()
+            cmHandleState = CmHandleState.READY
         then: 'the cm handle state changes to READY'
             assert CmHandleState.READY == cmHandleState
     }
@@ -38,7 +38,7 @@
         given: 'a cm handle with a READY state'
             def cmHandleState = CmHandleState.READY
         when: 'the state transitions to READY state'
-            cmHandleState = cmHandleState.ready()
+            cmHandleState = CmHandleState.READY
         then: 'the cm handle state remains as READY'
             assert CmHandleState.READY == cmHandleState
     }
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/sync/ModuleSyncSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/sync/ModuleSyncSpec.groovy
index 0a06fba..35de99f 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/sync/ModuleSyncSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/sync/ModuleSyncSpec.groovy
@@ -23,6 +23,7 @@
 
 import org.onap.cps.ncmp.api.impl.yangmodels.YangModelCmHandle
 import org.onap.cps.ncmp.api.inventory.CmHandleState
+import org.onap.cps.ncmp.api.inventory.CompositeState
 import spock.lang.Specification
 
 class ModuleSyncSpec extends Specification {
@@ -37,8 +38,10 @@
 
     def 'Schedule a Cm-Handle Sync for ADVISED Cm-Handles'() {
         given: 'cm handles in an advised state'
-            def yangModelCmHandle1 = new YangModelCmHandle(cmHandleState: cmHandleState)
-            def yangModelCmHandle2 = new YangModelCmHandle(cmHandleState: cmHandleState)
+            def compositeState = new CompositeState()
+            compositeState.cmhandleState = cmHandleState
+            def yangModelCmHandle1 = new YangModelCmHandle(compositeState: compositeState)
+            def yangModelCmHandle2 = new YangModelCmHandle(compositeState: compositeState)
         and: 'sync utilities return a cm handle twice'
             mockSyncUtils.getAnAdvisedCmHandle() >>> [yangModelCmHandle1, yangModelCmHandle2, null]
         when: 'module sync poll is executed'
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/sync/SyncUtilsSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/sync/SyncUtilsSpec.groovy
index e5d3652..c80263e 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/sync/SyncUtilsSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/inventory/sync/SyncUtilsSpec.groovy
@@ -25,6 +25,7 @@
 import org.onap.cps.ncmp.api.impl.operations.YangModelCmHandleRetriever
 import org.onap.cps.ncmp.api.impl.yangmodels.YangModelCmHandle
 import org.onap.cps.ncmp.api.inventory.CmHandleState
+import org.onap.cps.ncmp.api.inventory.CompositeState
 import org.onap.cps.spi.CpsDataPersistenceService
 import org.onap.cps.spi.FetchDescendantsOption
 import org.onap.cps.spi.model.DataNode
@@ -68,8 +69,10 @@
 
     def 'Update cm handle state from Advised to Ready'() {
         given: 'a yang model cm handle and the expected json data'
-            def yangModelCmHandle = new YangModelCmHandle(id: 'Some-Cm-Handle', cmHandleState: CmHandleState.ADVISED)
-            def expectedJsonData = '{"cm-handles":[{"id":"Some-Cm-Handle","state":"READY"}]}'
+            def compositeState = new CompositeState()
+            compositeState.cmhandleState = CmHandleState.ADVISED
+            def yangModelCmHandle = new YangModelCmHandle(id: 'Some-Cm-Handle', compositeState: compositeState )
+            def expectedJsonData = '{"cm-handles":[{"id":"Some-Cm-Handle","state":{"cm-handle-state":"READY"}}]}'
         when: 'update cm handle state is called'
             objectUnderTest.updateCmHandleState(yangModelCmHandle, CmHandleState.READY)
         then: 'update data note leaves is invoked with the correct params'
diff --git a/cps-ncmp-service/src/test/resources/expectedStateModel.json b/cps-ncmp-service/src/test/resources/expectedStateModel.json
new file mode 100644
index 0000000..a416194
--- /dev/null
+++ b/cps-ncmp-service/src/test/resources/expectedStateModel.json
@@ -0,0 +1,19 @@
+{
+  "cm-handle-state" : "ADVISED",
+  "lock-reason" : {
+    "reason" : "lock-reason",
+    "details" : "lock-misbehaving-details"
+  },
+  "last-update-time" : "2022-01-01T01:01:01.000-1800",
+  "data-sync-enabled" : false,
+  "datastores" : {
+    "operational" : {
+      "sync-state" : "NONE_REQUESTED",
+      "last-sync-time" : "2022-01-01T01:01:01.000-1800"
+    },
+    "running" : {
+      "sync-state" : "NONE_REQUESTED",
+      "last-sync-time" : "2022-01-01T01:01:01.000-1800"
+    }
+  }
+}
\ No newline at end of file