Our app introduces monthly subscriptions. The process is to execute SKProductsRequest.start() from the app, verify the received receipt with our system, and turn on the premium feature.
With the current app design, if you resubscribe from the iPhone settings, the app cannot detect it, so we have introduced a process to retrieve the receipt from Bundle.main.appStoreReceiptURL and verify whether it is the correct receipt.
The expected receipt information is the receipt that includes the "original_transaction_id" and "transaction_id" information as shown below.
"receipt": {
···omission···
},
"auto_renew_product_id": "jp.co.**********.subscription",
"auto_renew_status": 1,
"latest_receipt_info": {
···omission···
"original_transaction_id": "20000**********",
···omission···
"transaction_id": "200013**********",
···omission···
},
"latest_receipt": "Receipt",
"status": 0
However, as shown below, we found many logs (more than a few dozen for 2% of users) where receipts with missing information were retrieved. Considering the number of data items, it is unlikely that the receipt was falsified.
"receipt": {
···omission···
"in_app": []
},
"environment": "Production",
"status": 0
Our system links users based on "original_transaction_id" and "transaction_id," but since we are unable to obtain the necessary information, we are unable to determine whether the user has already purchased a subscription.
Question 1 What are the possible situations in which receipts with missing information like this are obtained? For example, is it possible for a receipt like this to be generated even though no charges have been made?
Question 2 Is there a way to update such receipts with the correct information? I searched the Developer forum, but if I do SKReceiptRefreshRequest, will I be able to obtain necessary information such as "original_transaction_id" and "transaction_id"?