ToolerCat / Chargeback Reason Codes / Mastercard 4812 — Account Number Not on File

Mastercard 4812 — Account Number Not on File

Authorization chargeback · legacy: now handled as 4808.

Code
4812 Mastercard legacy: now handled as 4808
Category
Authorization
What it means
The card number does not exist at the issuer.
Evidence that wins
Proof of valid authorization.
How to prevent it
Authorize all transactions.

Rules and deadlines differ by region and acquirer — always check the instructions in your PSP dashboard.

All chargeback codes → Decline codes