Error: Apple pay not completed

Question

I have implemented apple pay in my iOS application using Passkit framework. I did all of these things fully to set up apple pay. I am using sandbox account. I added

Answer 1

In each implemented delegate function of PKPaymentAuthorizationViewControllerDelegate that have completion/handler you must call that block with the appropriate parameters and most importantly with appropriate status.

On iOS 11 not calling the block within (approximately) 15-20s, the iOS is killing the Payment with the error you are seeing. On iOS 10, it will let you spin on Processing indefinitely until the completion blocks are called.

I had the same issue and it turned out that I was not calling the handler block at all in one of the edge cases.