diff --git a/specification/app/resource-manager/Microsoft.App/preview/2024-08-02-preview/Diagnostics.json b/specification/app/resource-manager/Microsoft.App/preview/2024-08-02-preview/Diagnostics.json
index 7d8bf7de24c0..233c3d1677ae 100644
--- a/specification/app/resource-manager/Microsoft.App/preview/2024-08-02-preview/Diagnostics.json
+++ b/specification/app/resource-manager/Microsoft.App/preview/2024-08-02-preview/Diagnostics.json
@@ -556,15 +556,8 @@
             "in": "path",
             "description": "Proxy API Name for Container App Job.",
             "required": true,
-            "enum": [
-              "rootApi"
-            ],
             "type": "string",
-            "pattern": "^[-\\w\\._]+$",
-            "x-ms-enum": {
-              "name": "ApiName",
-              "modelAsString": false
-            }
+            "pattern": "^[-\\w\\._]+$"
           },
           {
             "$ref": "../../../../../common-types/resource-management/v3/types.json#/parameters/ApiVersionParameter"