diff --git a/specification/appconfiguration/AppConfiguration/client.tsp b/specification/appconfiguration/AppConfiguration/client.tsp
index 7b5ef1e841d9..891871fc263b 100644
--- a/specification/appconfiguration/AppConfiguration/client.tsp
+++ b/specification/appconfiguration/AppConfiguration/client.tsp
@@ -7,10 +7,6 @@ using AzureAppConfiguration;
 
 namespace SdkCustomizations;
 
-// Cross-language customizations
-// except Java, since Java has built-in type in azure-core for Error model.
-@@clientName(Foundations.Error, "ErrorDetail", "python,csharp,javascript,go");
-
 // Python specific customizations
 @@clientName(KeyValueFields, "ConfigurationSettingFields", "python");
 @@clientName(CompositionType, "SnapshotComposition", "python");
diff --git a/specification/appconfiguration/AppConfiguration/models.tsp b/specification/appconfiguration/AppConfiguration/models.tsp
index eefb14ce0daf..ec35a207e6da 100644
--- a/specification/appconfiguration/AppConfiguration/models.tsp
+++ b/specification/appconfiguration/AppConfiguration/models.tsp
@@ -314,6 +314,8 @@ model Label {
   name?: string;
 }
 
+model ErrorDetail is Foundations.Error;
+
 @doc("Details of a long running operation.")
 model OperationDetails {
   @doc("The unique id of the operation.")
@@ -326,5 +328,5 @@ model OperationDetails {
     An error, available when the status is `Failed`, describing why the operation
     failed.
     """)
-  error?: Foundations.Error;
+  error?: ErrorDetail;
 }
diff --git a/specification/appconfiguration/data-plane/Microsoft.AppConfiguration/stable/2023-11-01/appconfiguration.json b/specification/appconfiguration/data-plane/Microsoft.AppConfiguration/stable/2023-11-01/appconfiguration.json
index 387cd34363c3..b358eba2d935 100644
--- a/specification/appconfiguration/data-plane/Microsoft.AppConfiguration/stable/2023-11-01/appconfiguration.json
+++ b/specification/appconfiguration/data-plane/Microsoft.AppConfiguration/stable/2023-11-01/appconfiguration.json
@@ -2691,6 +2691,40 @@
         }
       }
     },
+    "ErrorDetail": {
+      "type": "object",
+      "description": "The error object.",
+      "properties": {
+        "code": {
+          "type": "string",
+          "description": "One of a server-defined set of error codes."
+        },
+        "message": {
+          "type": "string",
+          "description": "A human-readable representation of the error."
+        },
+        "target": {
+          "type": "string",
+          "description": "The target of the error."
+        },
+        "details": {
+          "type": "array",
+          "description": "An array of details about specific errors that led to this reported error.",
+          "items": {
+            "$ref": "#/definitions/Azure.Core.Foundations.Error"
+          },
+          "x-ms-identifiers": []
+        },
+        "innererror": {
+          "$ref": "#/definitions/Azure.Core.Foundations.InnerError",
+          "description": "An object containing more specific information than the current object about the error."
+        }
+      },
+      "required": [
+        "code",
+        "message"
+      ]
+    },
     "Key": {
       "type": "object",
       "description": "Keys serve as identifiers for key-values and are used to store and retrieve corresponding values.",
@@ -2936,7 +2970,7 @@
           "description": "The current status of the operation"
         },
         "error": {
-          "$ref": "#/definitions/Azure.Core.Foundations.Error",
+          "$ref": "#/definitions/ErrorDetail",
           "description": "An error, available when the status is `Failed`, describing why the operation\nfailed."
         }
       },