diff --git a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2023-11-01-preview/appplatform.json b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2023-11-01-preview/appplatform.json
index 55957d0ddfbc..3c5e7acbbff0 100644
--- a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2023-11-01-preview/appplatform.json
+++ b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2023-11-01-preview/appplatform.json
@@ -14389,6 +14389,19 @@
             "$ref": "#/definitions/ApiPortalInstance"
           },
           "readOnly": true
+        },
+        "apiTryOutEnabledState": {
+          "description": "Indicates whether the API try-out feature is enabled or disabled. When enabled, users can try out the API by sending requests and viewing responses in API portal. When disabled, users cannot try out the API.",
+          "type": "string",
+          "default": "Enabled",
+          "enum": [
+            "Enabled",
+            "Disabled"
+          ],
+          "x-ms-enum": {
+            "name": "ApiPortalApiTryOutEnabledState",
+            "modelAsString": true
+          }
         }
       }
     },
diff --git a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2023-11-01-preview/examples/ApiPortals_CreateOrUpdate.json b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2023-11-01-preview/examples/ApiPortals_CreateOrUpdate.json
index 91a37753916c..7d56fda48988 100644
--- a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2023-11-01-preview/examples/ApiPortals_CreateOrUpdate.json
+++ b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2023-11-01-preview/examples/ApiPortals_CreateOrUpdate.json
@@ -10,7 +10,8 @@
         "public": true,
         "gatewayIds": [
           "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/myResourceGroup/providers/Microsoft.AppPlatform/Spring/myservice/gateways/default"
-        ]
+        ],
+        "apiTryOutEnabledState": "Enabled"
       },
       "sku": {
         "name": "E0",
@@ -42,7 +43,8 @@
               "name": "instance2",
               "status": "Running"
             }
-          ]
+          ],
+          "apiTryOutEnabledState": "Enabled"
         },
         "sku": {
           "name": "E0",
diff --git a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2023-11-01-preview/examples/ApiPortals_Get.json b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2023-11-01-preview/examples/ApiPortals_Get.json
index 6209bb5368c7..1fbe5831dd27 100644
--- a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2023-11-01-preview/examples/ApiPortals_Get.json
+++ b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2023-11-01-preview/examples/ApiPortals_Get.json
@@ -29,7 +29,8 @@
               "name": "instance2",
               "status": "Running"
             }
-          ]
+          ],
+          "apiTryOutEnabledState": "Enabled"
         },
         "sku": {
           "name": "E0",
diff --git a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2023-11-01-preview/examples/ApiPortals_List.json b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2023-11-01-preview/examples/ApiPortals_List.json
index b96e780c291b..03ca3b86b578 100644
--- a/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2023-11-01-preview/examples/ApiPortals_List.json
+++ b/specification/appplatform/resource-manager/Microsoft.AppPlatform/preview/2023-11-01-preview/examples/ApiPortals_List.json
@@ -30,7 +30,8 @@
                   "name": "instance2",
                   "status": "Running"
                 }
-              ]
+              ],
+              "apiTryOutEnabledState": "Enabled"
             },
             "sku": {
               "name": "E0",