diff --git a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2019-05-01-preview/appplatform.json b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2019-05-01-preview/appplatform.json
index 4bca895a613e..b3cd5eda5095 100644
--- a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2019-05-01-preview/appplatform.json
+++ b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2019-05-01-preview/appplatform.json
@@ -3523,6 +3523,18 @@
           "$ref": "#/definitions/OperationDisplay",
           "description": "Display of the operation"
         },
+        "actionType": {
+          "description": "Enum. Indicates the action type. \"Internal\" refers to actions that are for internal only APIs.",
+          "type": "string",
+          "readOnly": true,
+          "enum": [
+            "Internal"
+          ],
+          "x-ms-enum": {
+            "name": "ActionType",
+            "modelAsString": true
+          }
+        },
         "origin": {
           "description": "Origin of the operation",
           "type": "string"
diff --git a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2020-11-01-preview/appplatform.json b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2020-11-01-preview/appplatform.json
index 678926090b77..a3ccb1ea500f 100644
--- a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2020-11-01-preview/appplatform.json
+++ b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2020-11-01-preview/appplatform.json
@@ -4107,6 +4107,18 @@
           "$ref": "#/definitions/OperationDisplay",
           "description": "Display of the operation"
         },
+        "actionType": {
+          "description": "Enum. Indicates the action type. \"Internal\" refers to actions that are for internal only APIs.",
+          "type": "string",
+          "readOnly": true,
+          "enum": [
+            "Internal"
+          ],
+          "x-ms-enum": {
+            "name": "ActionType",
+            "modelAsString": true
+          }
+        },
         "origin": {
           "description": "Origin of the operation",
           "type": "string"
diff --git a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2021-06-01-preview/appplatform.json b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2021-06-01-preview/appplatform.json
index 3174ae39cad0..6c0fbc77cf5e 100644
--- a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2021-06-01-preview/appplatform.json
+++ b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2021-06-01-preview/appplatform.json
@@ -4187,6 +4187,18 @@
           "$ref": "#/definitions/OperationDisplay",
           "description": "Display of the operation"
         },
+        "actionType": {
+          "description": "Enum. Indicates the action type. \"Internal\" refers to actions that are for internal only APIs.",
+          "type": "string",
+          "readOnly": true,
+          "enum": [
+            "Internal"
+          ],
+          "x-ms-enum": {
+            "name": "ActionType",
+            "modelAsString": true
+          }
+        },
         "origin": {
           "description": "Origin of the operation",
           "type": "string"
diff --git a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2021-09-01-preview/appplatform.json b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2021-09-01-preview/appplatform.json
index 4e96f4b01cf5..3df63df26292 100644
--- a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2021-09-01-preview/appplatform.json
+++ b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2021-09-01-preview/appplatform.json
@@ -4969,6 +4969,18 @@
           "$ref": "#/definitions/OperationDisplay",
           "description": "Display of the operation"
         },
+        "actionType": {
+          "description": "Enum. Indicates the action type. \"Internal\" refers to actions that are for internal only APIs.",
+          "type": "string",
+          "readOnly": true,
+          "enum": [
+            "Internal"
+          ],
+          "x-ms-enum": {
+            "name": "ActionType",
+            "modelAsString": true
+          }
+        },
         "origin": {
           "description": "Origin of the operation",
           "type": "string"
diff --git a/specification/appplatform/resource-manager/Microsoft.AppPlatform/stable/2020-07-01/appplatform.json b/specification/appplatform/resource-manager/Microsoft.AppPlatform/stable/2020-07-01/appplatform.json
index d18821cea9f8..8033193e6a56 100644
--- a/specification/appplatform/resource-manager/Microsoft.AppPlatform/stable/2020-07-01/appplatform.json
+++ b/specification/appplatform/resource-manager/Microsoft.AppPlatform/stable/2020-07-01/appplatform.json
@@ -4078,6 +4078,18 @@
           "$ref": "#/definitions/OperationDisplay",
           "description": "Display of the operation"
         },
+        "actionType": {
+          "description": "Enum. Indicates the action type. \"Internal\" refers to actions that are for internal only APIs.",
+          "type": "string",
+          "readOnly": true,
+          "enum": [
+            "Internal"
+          ],
+          "x-ms-enum": {
+            "name": "ActionType",
+            "modelAsString": true
+          }
+        },
         "origin": {
           "description": "Origin of the operation",
           "type": "string"