The payment was declined by the buyer's bank due to reason 12 - Incorrect Transaction Code.
This is a generic code used by banks that does not specify the exact nature of the decline.
- The buyer may have incorrectly entered their card number, used an incorrect verification code, entered an invalid expiration date, etc.
- The transaction is associated with a recurring payment (Subscription), payment type that is not authorized for the used card.
Unfortunately, we have no additional information about the reason for the decline.