---
title: sourceAppStoreItemIdentifier
framework: storekittest
role: symbol
role_heading: Instance Property
path: storekittest/skadtestpostback/sourceappstoreitemidentifier
---

# sourceAppStoreItemIdentifier

The item identifier of the app that displays the ad.

## Declaration

```swift
var sourceAppStoreItemIdentifier: Int { get }
```

## Discussion

Discussion In the testing environment, the sourceAppStoreItemIdentifier is always 0.

## See Also

### Getting advertisement information

- [adNetworkIdentifier](storekittest/skadtestpostback/adnetworkidentifier.md)
- [appStoreItemIdentifier](storekittest/skadtestpostback/appstoreitemidentifier.md)
- [sourceDomain](storekittest/skadtestpostback/sourcedomain.md)
- [sourceIdentifier](storekittest/skadtestpostback/sourceidentifier.md)