Mastercard 4831 — Transaction Amount Differs
Processing Error chargeback · legacy: now handled as 4834.
Code
4831 Mastercard legacy: now handled as 4834Category
Processing Error
What it means
Charged amount differs from agreed amount.
Evidence that wins
Receipt showing correct amount.
How to prevent it
Capture the agreed amount.
Rules and deadlines differ by region and acquirer — always check the instructions in your PSP dashboard.