diff --git a/specification/communication/resource-manager/Microsoft.Communication/stable/2020-08-20/CommunicationService.json b/specification/communication/resource-manager/Microsoft.Communication/stable/2020-08-20/CommunicationService.json
index 0c4c757fd45f..1b682a599503 100644
--- a/specification/communication/resource-manager/Microsoft.Communication/stable/2020-08-20/CommunicationService.json
+++ b/specification/communication/resource-manager/Microsoft.Communication/stable/2020-08-20/CommunicationService.json
@@ -670,6 +670,10 @@
           "description": "Name of the operation with format: {provider}/{resource}/{operation}",
           "type": "string"
         },
+        "isDataAction": {
+          "description": "Indicates whether the operation is a data action",
+          "type": "boolean"
+        },
         "display": {
           "$ref": "#/definitions/OperationDisplay",
           "description": "The object that describes the operation."
@@ -956,6 +960,9 @@
           "$ref": "#/definitions/CommunicationServiceProperties",
           "description": "The properties of the service.",
           "x-ms-client-flatten": true
+        },
+        "systemData": {
+          "$ref": "../../../../../common-types/resource-management/v2/types.json#/definitions/systemData"
         }
       }
     },