My company has implemented Apple Pay on the Web. We are getting 400 and 403 status codes returned from Apple during the merchant validation process and have no idea why. All the required fields described here are provided. (https://developer.apple.com/documentation/apple_pay_on_the_web/apple_pay_js_api/requesting_an_apple_pay_payment_session)
We completed the configuration of environments, registering and verifying domains, and have even tested successfully on lower environments.
We completed the configuration of environments, registering and verifying domains, and have even tested successfully on lower environments.