Extracting Transaction IDs from App Receipts

Question

mariadab OP

Created Apr ’24

Replies 3

Boosts 0

Participants 3

Hello everyone,

I'm currently in the process of updating my code to remove the deprecated verifyReceipt method in line with the latest documentation and guidelines.

I have a question regarding the Receipt Usage example provided in the documentation here: https://github.com/apple/app-store-server-library-java?tab=readme-ov-file#receipt-usage

ReceiptUtility receiptUtil = new ReceiptUtility();
String transactionId = receiptUtil.extractTransactionIdFromAppReceipt(appReceipt);

My question is: Why does this method only return one transactionId? I had assumed that it might return a list of different transaction IDs present in the encoded receipt.

Thank you in advance for any assistance!

Best regards,

Maria

Boost

Answer 1

mariadab OP

Apr ’24

Actually what I meant was originalTransactionId. Single originalTransactionId is returned but in the receipt there could be multiple ones.

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Answer 2

App Store Commerce Engineer OP

Apple

Apr ’24

The method returns a single transactionId because that's all you need to transition off of verifyReceipt - a single valid transactionId for each of your users. Once you have this transactionId, you can then switch to calling the modern App Store Server API endpoints that accept a transactionId as an argument. See these core endpoints (which can be called via the App Store Server Library):

https://developer.apple.com/documentation/appstoreserverapi/get_transaction_history

https://developer.apple.com/documentation/appstoreserverapi/get_all_subscription_statuses

For more information, see these WWDC sessions:

https://developer.apple.com/videos/play/wwdc2023/10141/?time=878

https://developer.apple.com/videos/play/wwdc2023/10143/

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Answer 3

shintaro-tanikawa OP

3d

Is it expected behavior for a user with more than 1000 transactions to experience over 2 minutes of processing time with this approach? Given this implementation, it seems likely that the Rate Limit of 50 RPS could easily be reached.

https://github.com/apple/app-store-server-library-python?tab=readme-ov-file#receipt-usage

try:    
    transaction_id = receipt_util.extract_transaction_id_from_app_receipt(app_receipt)
    if transaction_id != None:
        transactions = []
        response: HistoryResponse = None
        request: TransactionHistoryRequest = TransactionHistoryRequest(
            sort=Order.ASCENDING,
            revoked=False,
            productTypes=[ProductType.AUTO_RENEWABLE]
        )
        while response == None or response.hasMore:
            revision = response.revision if response != None else None
            response = client.get_transaction_history(transaction_id, revision, request, GetTransactionHistoryVersion.V2)
            for transaction in response.signedTransactions:
                transactions.append(transaction)
        print(transactions)
except APIException as e:
    print(e)

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