---
title: original_transaction_id
framework: appstorereceipts
role: symbol
role_heading: Type
path: appstorereceipts/original_transaction_id
---

# original_transaction_id

The transaction identifier of the original purchase.

## Declaration

```data
string original_transaction_id
```

## Discussion

Discussion This field is returned in the JSON response, in the responseBody.Pending_renewal_info, responseBody.Latest_receipt_info, and responseBody.Receipt.In_app arrays. This value is identical to the transaction_id except when the user restores a purchase or renews a subscription. This value has the same format as the transaction’s transactionIdentifier property; however, the values may not be the same. For auto-renewable subscription transactions, this value also appears in the pending_renewal_info key of the JSON response. You can use this value to: Match a transaction found in the receipt to a server-to-server notification event. For more information, see Enabling App Store Server Notifications. Manage auto-renewable subscriptions. Store this value, product_id, expires_date_ms, and purchase_date_ms for each transaction for each customer, as a best practice. Identify a subscription with the product_id in the pending_renewal_info section. Do not rely on the original_transaction_id value on its own. Treat this purchase as a new subscription when you see a new original_transaction_id value for a product_id. Differentiate a purchase transaction from a restore or a renewal transaction. In a purchase transaction, the transaction_id always matches the original_transaction_id. For subscriptions, it indicates the first subscription purchase. For a restore or renewal, the transaction_id does not match the original_transaction_id. Identify one or more renewals for the same subscription.

## See Also

### Transaction identifiers

- [transaction_id](appstorereceipts/transaction_id.md)
- [app_account_token](appstorereceipts/app_account_token.md)