# Application.AdvertisingIdentifierCallback

> Delegate method for fetching advertising ID.

## Definition

* **Type:** Delegate
* **Namespace:** [UnityEngine](/engine/6000.5/script-reference/unityengine.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public delegate void Application.AdvertisingIdentifierCallback(string advertisingId, bool trackingEnabled, string errorMsg)
```

## Remarks

Additional Resources:[Application.RequestAdvertisingIdentifierAsync](/engine/6000.5/script-reference/unityengine/application/requestadvertisingidentifierasync.md)