I have implemented in-App purchases and "App Store Server Notifications" on my app and received the following response on my endpoint.
App Store Server Notification Response - https://developer.apple.com/forums/content/attachment/ee18d81f-09d0-4f5f-8720-063f6e8c49b3
However, is there a custom pass-through parameter that I can receive with my notifications/successful purchases.
For instance, I want to pass the userId when the user makes a payment so I know which user is associated with each payment.
In short, is there a parameter that I can customize to pass information for iOS payments?