I've successfully set up ApplePay Web for two of my sites. I've now added and verified the URL for my 3rd site. The issue I've got is I get sporadic failures attempting to initiate the ApplePay session with an error response of:
{ "statusMessage": "Payment Services Exception merchantId=xxxx not registered for domain=***.com", "statusCode": "400" }
The session intitiation DOES often succeed and then I'm able to complete a payment but.
The URL the ApplePay javascript supplies to intiate the session is:
https://apple-pay-gateway.apple.com/paymentservices/startSession
The payload I send is:
{ merchantIdentifier = "merchant.my.identifier", initiative = "web", initiativeContext = "site.url.com", displayName = "My Name" }
Any help would be greatly appreciated.