Hello Applepay,
This questions is about Domains and Subdomains using a Multi-Tenant web applications.
The problem is that we use the same (HTTPS://T2MPOF.COM) in our production environment for all customers, so that when the customer setups up the Merchant ID in their Apple Developer Account the verification URL will always be the same: HTTPS://T2MPOF.COM/.well-known/apple-developer-merchantid-domain-association.txt.
However, the content of that file will be different for each customer and Apple Pay will periodically verify that file.
We need a supported approach to get around this issue, and have been told that there is a possibility of using subdomains.
We are looking for a recommended approach that will work and is supported by Apple and if there is any risks associated with this approach.