On October 14, changes were implemented by American Express (AMEX) to adjust how Merchant Category Codes (MCCs) are mapped to Service Establishment (SE) groups.
AMEX merchant descriptor behavior is related to these groupings. The change resulted in invalid merchant descriptors being displayed for cardholders.
ProPay teams became aware of the issue on October 28 and implemented changes to correct the issue on November 4.
ProPay apologizes for any issues this caused merchants and cardholders. Teams worked with AMEX to ensure details of future changes are clearly communicated to prevent similar situations down the line.