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# providerToken

A token that represents the provider of an app promotion campaign, and that you use to measure the campaign’s effectiveness.

```
var providerToken: String? { get set }
```

## Discussion

When you set a provider token, you must also set the [`campaignToken`](/documentation/StoreKit/SKOverlay/AppConfiguration/campaignToken).

When promoting your own apps, set your own provider token using `providerToken`. This allows you to track a promotion’s effectiveness independently from any affiliate campaign that shares the same campaign token.

When promoting apps by other developers, set `providerToken` using their provider token. This allows those developers to track the effectiveness of your App Store Connect Analytics campaign.

---

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