---
title: SKStoreProductParameterAdNetworkSourceAppStoreIdentifier
framework: storekit
role: symbol
role_heading: Global Variable
path: storekit/skstoreproductparameteradnetworksourceappstoreidentifier
---

# SKStoreProductParameterAdNetworkSourceAppStoreIdentifier

The key that represents the App Store ID of the app that displays the ad.

## Declaration

```swift
let SKStoreProductParameterAdNetworkSourceAppStoreIdentifier: String
```

## Mentioned in

Generating the signature to validate StoreKit-rendered ads Identifying the parameters in install-validation postbacks Verifying an install-validation postback

## Discussion

Discussion The value for this key is an NSNumber. Provide the App Store item identifier of the app that’s displaying the ad. During testing, if you’re using a development-signed build to display the ads and not an app from App Store, use 0 as the item identifier.

## See Also

### Required keys for SKAdNetwork 2 and later

- [SKStoreProductParameterAdNetworkVersion](storekit/skstoreproductparameteradnetworkversion.md)