diff --git a/specification/recoveryservicesbackup/resource-manager/Microsoft.RecoveryServices/stable/2021-12-01/bms.json b/specification/recoveryservicesbackup/resource-manager/Microsoft.RecoveryServices/stable/2021-12-01/bms.json
index 8fdd67c45139..ac6644732832 100644
--- a/specification/recoveryservicesbackup/resource-manager/Microsoft.RecoveryServices/stable/2021-12-01/bms.json
+++ b/specification/recoveryservicesbackup/resource-manager/Microsoft.RecoveryServices/stable/2021-12-01/bms.json
@@ -4386,6 +4386,15 @@
             "in": "path",
             "required": true,
             "type": "string"
+          },
+          {
+            "name": "parameters",
+            "in": "body",
+            "description": "Request body for operation",
+            "required": true,
+            "schema": {
+              "$ref": "#/definitions/ResourceGuardProxyBaseResource"
+            }
           }
         ],
         "responses": {