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# Associate Seat

Associate a customer with a claimed seat in a group subscription that uses developer-hosted invitations.

## Discussion

> Important:
> This endpoint is only available in the sandbox environment.

Call this endpoint only for an active group subscription that uses developer-hosted invitations, where the [`invitationManagement`](/documentation/AppStoreServerAPI/invitationManagement) value in the purchaser’s transaction is `DEVELOPER`. Use it to tell the App Store which customer occupies a seat that you already claimed, when you learn the customer’s [`appTransactionId`](/documentation/AppStoreServerAPI/appTransactionId) after the claim. Provide the `appTransactionId` in an [`AssociateSeatRequest`](/documentation/AppStoreServerAPI/AssociateSeatRequest).

If you know the customer’s `appTransactionId` when you claim the seat, include it in the [`ClaimSeatRequest`](/documentation/AppStoreServerAPI/ClaimSeatRequest) instead; you don’t need to call this endpoint.

Associating a customer with a seat doesn’t grant them access. You’re responsible for providing access to the subscription.

---

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