Unfortunately, their docs are explicit about discount codes, "Do not ask the user to perform any other tasks before presenting the payment request. For example, if the user needs to enter a discount code, you must ask for the code before they press the Apple Pay button."
https://applepaydemo.apple.com
Unfortunately, their docs are explicit about discount codes, "Do not ask the user to perform any other tasks before presenting the payment request. For example, if the user needs to enter a discount code, you must ask for the code before they press the Apple Pay button."
https://developer.apple.com/library/archive/ApplePay_Guide/C...