Vadim's Notes

Finishing Failed Transactions

On the topic of regressions in minor iOS updates, there was another one a bit ago on iOS 13.4 release, as I recall. That one was in the StoreKit API, and it has changed the way how failed transactions are being processed.

Normally, you have to finish every transaction passed into your SKPaymentQueue delegate once you are done processing it, and that includes failed transactions. However that wasn't the case on iOS 13.3 and earlier releases: failed transactions did not require finishTransaction: call and were removed from the queue even if they were not acknowledged.

Starting with iOS 13.4 though, you have to acknowledge all transactions.

[[SKPaymentQueue defaultQueue] finishTransaction: transaction];