In the past few days we've been seeing cards get declined with this rather cryptic error message when attempting to charge a card on file. The error message is literally "DECLINED-XXX", that's not a placeholder. For example, The response from POSTing to the /v1/charges API would be:
{"message":"402 Payment Required","error":{"code":"card_declined","message":"DECLINED-XXX","charge":"YSYB6Y7SDMVFX","declineCode":"issuer_declined"}}
We've seen this on different customer's cards. Can anyone shed some light on what that message means? Usually the message has a more useful description of what the problem is.