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# SKStoreProductParameterProviderToken

The key representing the provider token for the developer that created the app specified by the [`SKStoreProductParameterITunesItemIdentifier`](/documentation/StoreKit/SKStoreProductParameterITunesItemIdentifier) key.

```
let SKStoreProductParameterProviderToken: String
```

## Discussion

The value for this key is an instance of <doc://com.apple.documentation/documentation/Foundation/NSString>.

Use your own provider token when cross promoting your own apps. This token lets you track the effectiveness of the cross promotion effort separate from any affiliate campaign that shares the same campaign token.

When promoting apps for other developers, use their provider token instead. In this case, the token lets the developer track the effectiveness of your App Analytics campaign for their apps.

The key must be used in combination with your campaign token, [`SKStoreProductParameterCampaignToken`](/documentation/StoreKit/SKStoreProductParameterCampaignToken). For more information, see [App Store Connect Developer Guide](https://developer.apple.com/library/archive/documentation/LanguagesUtilities/Conceptual/iTunesConnect_Guide/Chapters/About.html#//apple_ref/doc/uid/TP40011225).

---

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