Back to AllMX Merchant Release (July 2020) almost 4 years ago by Johnson NguyenMX Merchant Release 6.97(07/30/20) Made improvements to our MX Merchant notification feature of sending failure messages MX Merchant Release 6.95.0-6.96.0(07/16/20) Improved MX Merchant back end infrastructure Added a feature to MX Merchant customer API to determine if a card is a debit or credit.