---
title: assetListResponseStatusDidChangeErrorKey
framework: avfoundation
role: symbol
role_heading: Type Property
path: avfoundation/avplayerinterstitialeventmonitor/assetlistresponsestatusdidchangeerrorkey
---

# assetListResponseStatusDidChangeErrorKey

A key to retrieve the error related to a change in an interstitial event’s asset list response.

## Declaration

```swift
class let assetListResponseStatusDidChangeErrorKey: String
```

## Discussion

Discussion This key only exists in the notification’s userInfo dictionary when the status is AVPlayerInterstitialEventAssetListResponseStatus.unavailable. Use it to retrieve an error object that provides information about the failure to read the asset list.

## See Also

### User information keys

- [assetListResponseStatusDidChangeEventKey](avfoundation/avplayerinterstitialeventmonitor/assetlistresponsestatusdidchangeeventkey.md)
- [assetListResponseStatusDidChangeStatusKey](avfoundation/avplayerinterstitialeventmonitor/assetlistresponsestatusdidchangestatuskey.md)