diff --git a/schemas/2021-10-01-preview/Microsoft.StreamAnalytics.json b/schemas/2021-10-01-preview/Microsoft.StreamAnalytics.json
index 019e7270ec..4e4b146b3e 100644
--- a/schemas/2021-10-01-preview/Microsoft.StreamAnalytics.json
+++ b/schemas/2021-10-01-preview/Microsoft.StreamAnalytics.json
@@ -296,6 +296,66 @@
       ],
       "description": "Describes how data from an input is serialized or how data is serialized when written to an output in Avro format."
     },
+    "AzureDataExplorerOutputDataSource": {
+      "type": "object",
+      "properties": {
+        "properties": {
+          "oneOf": [
+            {
+              "$ref": "#/definitions/AzureDataExplorerOutputDataSourceProperties"
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
+          "description": "The properties that are associated with an Azure Data Explorer output."
+        },
+        "type": {
+          "type": "string",
+          "enum": [
+            "Microsoft.Kusto/clusters/databases"
+          ]
+        }
+      },
+      "required": [
+        "type"
+      ],
+      "description": "Describes an Azure Data Explorer output data source."
+    },
+    "AzureDataExplorerOutputDataSourceProperties": {
+      "type": "object",
+      "properties": {
+        "authenticationMode": {
+          "oneOf": [
+            {
+              "type": "string",
+              "enum": [
+                "Msi",
+                "UserToken",
+                "ConnectionString"
+              ]
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
+          "description": "Authentication Mode."
+        },
+        "cluster": {
+          "type": "string",
+          "description": "The name of the Azure Data Explorer cluster. Required on PUT (CreateOrReplace) requests."
+        },
+        "database": {
+          "type": "string",
+          "description": "The name of the Azure Data Explorer database. Required on PUT (CreateOrReplace) requests."
+        },
+        "table": {
+          "type": "string",
+          "description": "The name of the Azure Table. Required on PUT (CreateOrReplace) requests."
+        }
+      },
+      "description": "The properties that are associated with an Azure Data Explorer output."
+    },
     "AzureDataLakeStoreOutputDataSource": {
       "type": "object",
       "properties": {
@@ -2263,8 +2323,19 @@
           "description": "The type of identity, can be SystemAssigned or UserAssigned."
         },
         "userAssignedIdentities": {
-          "type": "object",
-          "properties": {},
+          "oneOf": [
+            {
+              "type": "object",
+              "additionalProperties": {
+                "type": "object",
+                "properties": {}
+              },
+              "properties": {}
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
           "description": "The user assigned identities associated with the streaming job resource."
         }
       },
@@ -2610,6 +2681,9 @@
         },
         {
           "$ref": "#/definitions/GatewayMessageBusOutputDataSource"
+        },
+        {
+          "$ref": "#/definitions/AzureDataExplorerOutputDataSource"
         }
       ],
       "properties": {},