# UnregisterReferenceResolvedCallback(Action<T>)

> Unregisters a callback for when the reference is resolved from the document.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine.UIElements](/engine/6000.7/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
public void UnregisterReferenceResolvedCallback(Action<T> callback)
```

### Parameters

**** (\[Action\<T>]\(https\://learn.microsoft.com/dotnet/api/system.action-1)): The callback to unregister.