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# requestIdentifier

A string that contains a unique identifier for a subscription-renewal-date extension request.

```
uuid requestIdentifier
```

## Discussion

You originally specify the `requestIdentifier` when you call <doc://com.apple.documentation/documentation/AppStoreServerAPI/Extend-Subscription-Renewal-Dates-for-All-Active-Subscribers> in the <doc://com.apple.documentation/documentation/AppStoreServerAPI>.

---

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