Mastercard Reason Code 4831

What is

The amount charged doesn't match the amount the cardholder authorized.

A pricing, tip, or currency-conversion discrepancy between the authorized amount and the final settled amount.

Common with tip adjustments or partial-shipment billing — matching your order record to the charged amount is key.

Order record and authorization log showing the exact amount agreed to and charged.

Submit the order and authorization records showing the amounts match, or explain any legitimate adjustment with customer consent on file.

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Settling a different amount than what was authorized without re-authorizing the change.

Re-authorize whenever the final charge amount differs from the original authorization.