MasterCard Reason Codes

MasterCard uses the four main categories to organize its reason codes: Authorization, Card Member Disputes, Fraud, and Processing Errors (which MasterCard refers to as Point-of-Interaction Errors).
CodeDescriptionHow To Win
4802Requested/Required Item Illegible or Missing
4807Warning Bulletin File
4808Requested/Required Authorization Not Obtained
4812Account Number Not on File
4831Transaction Amount Differs
4834Duplicate Processing
4835Card Not Valid or Expired
4837No Cardholder Authorization
4840Fraudulent Processing of Transactions
4841Cancelled Recurring Transaction
4842Late Presentment
4846Correct Transaction Currency Code Not Provided
4847Exceeds Floor Limit – Not Authorized and Fraudulent Transaction
4849Questionable Merchant Activity
4850Credit Posted as a Purchase
4853Cardholder Dispute – Defective/Not asDescribed
4854Cardholder Dispute-Not Elsewhere Classified
4855Non-Receipt of Merchandise
4859Addendum, No-show, or ATM Dispute
4860Credit Not Processed
4862Counterfeit Transaction Magnetic Stripe POS Fraud
4863Cardholder Does Not Recognize – PotentialFraud