diff --git a/specification/monitor/resource-manager/Microsoft.Insights/stable/2016-03-01/alertRules_API.json b/specification/monitor/resource-manager/Microsoft.Insights/stable/2016-03-01/alertRules_API.json
index 0e7576026b5d..bebf3d9d1c0c 100644
--- a/specification/monitor/resource-manager/Microsoft.Insights/stable/2016-03-01/alertRules_API.json
+++ b/specification/monitor/resource-manager/Microsoft.Insights/stable/2016-03-01/alertRules_API.json
@@ -36,7 +36,7 @@
     }
   },
   "paths": {
-    "/subscriptions/{subscriptionId}/resourcegroups/{resourceGroupName}/providers/microsoft.insights/alertrules/{ruleName}": {
+    "/subscriptions/{subscriptionId}/resourcegroups/{resourceGroupName}/providers/Microsoft.Insights/alertrules/{ruleName}": {
       "put": {
         "description": "Creates or updates a classic metric alert rule.",
         "tags": [
@@ -118,6 +118,12 @@
           },
           "200": {
             "description": "Successful request to delete an alert rule"
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
           }
         },
         "x-ms-examples": {
@@ -152,6 +158,12 @@
             "schema": {
               "$ref": "#/definitions/AlertRuleResource"
             }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
           }
         },
         "x-ms-examples": {
@@ -187,12 +199,6 @@
           }
         ],
         "responses": {
-          "default": {
-            "description": "Error response describing why the operation failed.",
-            "schema": {
-              "$ref": "#/definitions/ErrorResponse"
-            }
-          },
           "200": {
             "description": "Successful request to update an alert rule",
             "schema": {
@@ -204,6 +210,12 @@
             "schema": {
               "$ref": "#/definitions/AlertRuleResource"
             }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
           }
         },
         "x-ms-examples": {
@@ -213,7 +225,7 @@
         }
       }
     },
-    "/subscriptions/{subscriptionId}/resourcegroups/{resourceGroupName}/providers/microsoft.insights/alertrules": {
+    "/subscriptions/{subscriptionId}/resourcegroups/{resourceGroupName}/providers/Microsoft.Insights/alertrules": {
       "get": {
         "tags": [
           "AlertRules"
@@ -237,6 +249,12 @@
             "schema": {
               "$ref": "#/definitions/AlertRuleResourceCollection"
             }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
           }
         },
         "x-ms-pageable": {
@@ -249,7 +267,7 @@
         }
       }
     },
-    "/subscriptions/{subscriptionId}/providers/microsoft.insights/alertrules": {
+    "/subscriptions/{subscriptionId}/providers/Microsoft.Insights/alertrules": {
       "get": {
         "tags": [
           "AlertRules"
@@ -270,6 +288,12 @@
             "schema": {
               "$ref": "#/definitions/AlertRuleResourceCollection"
             }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
           }
         },
         "x-ms-pageable": {
diff --git a/specification/monitor/resource-manager/readme.md b/specification/monitor/resource-manager/readme.md
index c49b8742f138..14f9381db5db 100644
--- a/specification/monitor/resource-manager/readme.md
+++ b/specification/monitor/resource-manager/readme.md
@@ -599,6 +599,13 @@ directive:
   - suppress: R4007
     from: metricBaselines_API.json
     reason: 'Updating the error response to the new format would be a breaking change.'
+  - suppress: R4007
+    from: alertRules_API.json
+    reason: 'Updating the error response to the new format would be a breaking change.'
+  - suppress: OBJECT_ADDITIONAL_PROPERTIES
+    from: alertRules_API.json
+    where: $.definitions.AlertRuleResource
+    reason: 'Action is expected to receive a subclass of Resource'
   - suppress: OBJECT_ADDITIONAL_PROPERTIES
     from: metricAlert_API.json
     where: $.definitions.MetricAlertResource