Unable to present Apple Pay Authorization Controller

Question

When I attempt to present a PKPaymentAuthorizationController with present(completion: _) it fails without any further information.

Here's how I'm presenting it:

let paymentSummaryItems: [PKPaymentSummaryItem] = <HIDDEN>

let paymentRequest = PKPaymentRequest()
paymentRequest.paymentSummaryItems = paymentSummaryItems
paymentRequest.merchantIdentifier = <HIDDEN>
paymentRequest.merchantCapabilities = .capability3DS
paymentRequest.countryCode = "US"
paymentRequest.currencyCode = "USD"
paymentRequest.supportedNetworks = [.visa, .amex, .masterCard, .discover]
paymentRequest.requiredShippingAddressFields = [.email]

let paymentController = PKPaymentAuthorizationController(paymentRequest: paymentRequest)
paymentController.delegate = self

paymentController.present { success in
    if success {
      print("Presented payment controller")
    } else {
      print("Failed to present payment controller")
    }
}

Every time I try, I get the message "Failed to present payment controller", and no Apple Pay Authorization modal appears.

I added a PKPaymentAuthorizationController.canMakePayments() check, and that returns true. I'm not sure what could be going wrong. The same code (with a different merchantIdentifier ) works in my other Apple Pay projects with no problems.

Answer 1

If you have a typo at any of the properties of PKPaymentRequest object, that will cause this behaviour. Please double check that following properties are correct:

• merchantID should match your merchantID in Capabilities.
• currencyCode should be three-letter ISO 4217 currency code.
• countryCode should be two-letter ISO 3166 country code.
• decimalNumbers in paymentSummaryItems

In my case, I was trying to just test the feature with hardcoded merchantID and it turned out it was misspelled. In that case PKPaymentRequest and PKPaymentAuthorizationController (or PKPaymentAuthorizationViewController ) will be initialised successfully but when you present controller, it simply wouldn't show up.

Answer 2

I figured it out, for anybody who encounters this issue in the future.

It turns out there was a problem with one of the NSDecimalNumbers in my array of PKPaymentSummaryItems, it didn't properly convert to a decimal and resulted in amount being set to NaN . Once I fixed it, the controller appeared properly.

Answer 3

I fixed it using following steps: 1 of which could be correct answer.

• In App target capabilities, enable Apple wallet and Apple pay
• Include correct merchant id, in the Apple pay list
• Change the merchant id in entitlements
• If any errors in provisining, enable "Automatically manage signing" provisioning profile (uncheck/check if reqd.)