When a payment remains pending on the part of Apple

[brainssolutions]

Hi Guys, Yesterday I happened that a user had made the payment for the first time with his Apple device.

I found a problem because on my app, when he made the payment, his payment was in a state of suspended in his wallet in fact my app will have received a code other than approved for which it has not saved the transaction.

Reading the guide I saw that you can through the API and from the receipt of the transaction verify the same. But my question is: In the receipt is outstanding, how can the server update the status of my transaction?