Adjust 202 response of UsageAggregates_List to match current behavior (Azure#23172)

Author: jeffmcco-msft

specification/commerce/resource-manager/Microsoft.Commerce/preview/2015-06-01-preview/commerce.json

@@ -96,7 +96,7 @@
           "202": {
             "description": "Response indicating that a request has been accepted for processing. However, the processing has not been completed.",
             "schema": {
-              "$ref": "#/definitions/ErrorResponse"
+              "$ref": "#/definitions/ErrorObjectResponse"
             }
           },
           "default": {
@@ -484,6 +484,16 @@
           "type": "string"
         }
       }
+    },
+    "ErrorObjectResponse": {
+      "description": "Describes the format of Error response with a wrapper object",
+      "type": "object",
+      "properties": {
+        "error": {
+          "description": "Wrapper object for error information",
+          "$ref": "#/definitions/ErrorResponse"
+        }
+      }
     }
   },
   "parameters": {

specification/commerce/resource-manager/Microsoft.Commerce/preview/2015-06-01-preview/examples/GetUsageAggregatesList.json

@@ -34,8 +34,10 @@
     },
     "202": {
       "body": {
-        "code": "aaaaaaaaaaaaaaaaaaaaaa",
-        "message": "aaaaaaaaaaaaaaaaaaaa"
+        "error": {
+          "code": "aaaaaaaaaaaaaaaaaaaaaa",
+          "message": "aaaaaaaaaaaaaaaaaaaa"
+        }
       }
     }
   }