American Express’s chargeback reason codes are grouped by fraud, authorization errors, processing errors, inquiry / miscellaneous errors, and cardmember disputes.

Discover’s chargeback reason codes are grouped by cardholder disputes and authorization errors.

MasterCard’s chargeback reason codes are grouped by fraud, authorization errors, point-of-interaction errors, and cardholder disputes.

Visa’s chargeback reason codes are grouped by fraud, authorization errors, processing errors, and customer disputes.