Implementation & API Sample Code

I set up Postman with my projects certificates, and I can get a successful response from the helloworld endpoint.  However, when I post to the Business Data Transaction API, I get a 404 response....

I encrypted a message in C# using  ECDH algorithm and A256GCM encryption method, But when I try to decrypt in Java getting below error  "AES/GCM/NoPadding decryption failed: Tag mismatc...

Hi, we are currently looking into VAU for merchant/PSP/acquirer with a card-on-file repository. They are interested in using VAU to check for card updates on their stored cards. I was told back in 201...