diff --git a/specification/hdinsight/resource-manager/Microsoft.HDInsight/preview/2015-03-01-preview/cluster.json b/specification/hdinsight/resource-manager/Microsoft.HDInsight/preview/2015-03-01-preview/cluster.json
index 0bbe754530be..18f23878f0c4 100644
--- a/specification/hdinsight/resource-manager/Microsoft.HDInsight/preview/2015-03-01-preview/cluster.json
+++ b/specification/hdinsight/resource-manager/Microsoft.HDInsight/preview/2015-03-01-preview/cluster.json
@@ -446,6 +446,14 @@
                         "type": "string"
                     },
                     "description": "Optional. The Distinguished Names for cluster user groups"
+                },
+                "aaddsResourceId": {
+                    "type": "string",
+                    "description": "The resource ID of the user's Azure Active Directory Domain Service."
+                },
+                "msiResourceId": {
+                    "type": "string",
+                    "description": "User assigned identity that has permissions to read and create cluster-related artifacts in the user's AADDS."
                 }
             }
         },
diff --git a/specification/hdinsight/resource-manager/Microsoft.HDInsight/preview/2018-06-01-preview/cluster.json b/specification/hdinsight/resource-manager/Microsoft.HDInsight/preview/2018-06-01-preview/cluster.json
index 2a77e99c11dd..d049e1e2c30f 100644
--- a/specification/hdinsight/resource-manager/Microsoft.HDInsight/preview/2018-06-01-preview/cluster.json
+++ b/specification/hdinsight/resource-manager/Microsoft.HDInsight/preview/2018-06-01-preview/cluster.json
@@ -446,6 +446,14 @@
                         "type": "string"
                     },
                     "description": "Optional. The Distinguished Names for cluster user groups"
+                },
+                "aaddsResourceId": {
+                    "type": "string",
+                    "description": "The resource ID of the user's Azure Active Directory Domain Service."
+                },
+                "msiResourceId": {
+                    "type": "string",
+                    "description": "User assigned identity that has permissions to read and create cluster-related artifacts in the user's AADDS."
                 }
             }
         },