diff --git a/specification/peering/resource-manager/Microsoft.Peering/stable/2020-04-01/peering.json b/specification/peering/resource-manager/Microsoft.Peering/stable/2020-04-01/peering.json
index 40b6f8e63c70..d38f947a5b3d 100644
--- a/specification/peering/resource-manager/Microsoft.Peering/stable/2020-04-01/peering.json
+++ b/specification/peering/resource-manager/Microsoft.Peering/stable/2020-04-01/peering.json
@@ -3327,6 +3327,16 @@
     "ErrorResponse": {
       "description": "The error response that indicates why an operation has failed.",
       "type": "object",
+      "properties": {
+        "error": {
+          "$ref": "#/definitions/ErrorDetail",
+          "description": "The error detail that describes why an operation has failed."
+        }
+      }
+    },
+    "ErrorDetail": {
+      "description": "The error detail that describes why an operation has failed.",
+      "type": "object",
       "properties": {
         "code": {
           "description": "The error code.",