diff --git a/specification/search/data-plane/Microsoft.Azure.Search.Service/preview/2016-09-01-preview/searchservice.json b/specification/search/data-plane/Microsoft.Azure.Search.Service/preview/2016-09-01-preview/searchservice.json
index 9738b0ba1bfc..97dd468bbec6 100644
--- a/specification/search/data-plane/Microsoft.Azure.Search.Service/preview/2016-09-01-preview/searchservice.json
+++ b/specification/search/data-plane/Microsoft.Azure.Search.Service/preview/2016-09-01-preview/searchservice.json
@@ -3275,11 +3275,26 @@
         "errorMessage": {
           "type": "string",
           "readOnly": true,
-          "description": "The message describing the error that occurred while attempting to index the item."
+          "description": "The message describing the error that occurred while processing the item."
         }
       },
       "description": "Represents an item- or document-level indexing error."
     },
+    "ItemWarning": {
+      "properties": {
+        "key": {
+          "type": "string",
+          "readOnly": true,
+          "description": "The key of the item which generated a warning."
+        },
+        "message": {
+          "type": "string",
+          "readOnly": true,
+          "description": "The message describing the warning that occurred while processing the item."
+        }
+      },
+      "description": "Represents an item-level warning."
+    },
     "IndexerExecutionResult": {
       "properties": {
         "status": {
@@ -3312,6 +3327,14 @@
           },
           "description": "The item-level indexing errors."
         },
+        "warnings": {
+          "type": "array",
+          "readOnly": true,
+          "items": {
+            "$ref": "#/definitions/ItemWarning"
+          },
+          "description": "The item-level indexing warnings."
+        },
         "itemsProcessed": {
           "x-ms-client-name": "ItemCount",
           "type": "integer",