diff --git a/specification/web/resource-manager/Microsoft.Web/stable/2018-02-01/WebApps.json b/specification/web/resource-manager/Microsoft.Web/stable/2018-02-01/WebApps.json
index eb27c3f53401..e2d573abf215 100644
--- a/specification/web/resource-manager/Microsoft.Web/stable/2018-02-01/WebApps.json
+++ b/specification/web/resource-manager/Microsoft.Web/stable/2018-02-01/WebApps.json
@@ -3546,6 +3546,12 @@
         "responses": {
           "204": {
             "description": "No Content"
+          },
+          "default": {
+            "description": "App Service error response.",
+            "schema": {
+              "$ref": "./CommonDefinitions.json#/definitions/DefaultErrorResponse"
+            }
           }
         }
       }
@@ -3782,6 +3788,12 @@
           },
           "204": {
             "description": "Key was deleted."
+          },
+          "default": {
+            "description": "App Service error response.",
+            "schema": {
+              "$ref": "./CommonDefinitions.json#/definitions/DefaultErrorResponse"
+            }
           }
         }
       }
@@ -11346,6 +11358,12 @@
           },
           "404": {
             "description": "Function with a name of {functionName} does not exist."
+          },
+          "default": {
+            "description": "App Service error response.",
+            "schema": {
+              "$ref": "./CommonDefinitions.json#/definitions/DefaultErrorResponse"
+            }
           }
         }
       },
@@ -11405,6 +11423,12 @@
           },
           "404": {
             "description": "Function with a name of {functionName} does not exist."
+          },
+          "default": {
+            "description": "App Service error response.",
+            "schema": {
+              "$ref": "./CommonDefinitions.json#/definitions/DefaultErrorResponse"
+            }
           }
         }
       }
@@ -11458,6 +11482,12 @@
           },
           "404": {
             "description": "Function with a name of {functionName} does not exist."
+          },
+          "default": {
+            "description": "App Service error response.",
+            "schema": {
+              "$ref": "./CommonDefinitions.json#/definitions/DefaultErrorResponse"
+            }
           }
         }
       }
@@ -11547,6 +11577,12 @@
         "responses": {
           "204": {
             "description": "No Content"
+          },
+          "default": {
+            "description": "App Service error response.",
+            "schema": {
+              "$ref": "./CommonDefinitions.json#/definitions/DefaultErrorResponse"
+            }
           }
         }
       }
@@ -11685,6 +11721,12 @@
         "responses": {
           "204": {
             "description": "No Content"
+          },
+          "default": {
+            "description": "App Service error response.",
+            "schema": {
+              "$ref": "./CommonDefinitions.json#/definitions/DefaultErrorResponse"
+            }
           }
         }
       }
@@ -11818,6 +11860,12 @@
           },
           "204": {
             "description": "Key was deleted."
+          },
+          "default": {
+            "description": "App Service error response.",
+            "schema": {
+              "$ref": "./CommonDefinitions.json#/definitions/DefaultErrorResponse"
+            }
           }
         }
       }