Reason Codes 76 (used by Visa) and 4850 (MasterCard) designate chargebacks resulting when a credit is posted on a cardholder's account as a purchase....
Chargeback Reason Codes 73 and 4835 are issued when two conditions were met: a payment is made with an expired card and the transaction is not authorized....
Visa chargeback Reason Code 72 results from processing transactions, which were above the merchant's floor limit, but authorization was not obtained....
Visa uses two-digit numbers called Chargeback Reason Codes to identify the reason a card issuer is disputing the validity of a particular transaction....