Mastercard 4871 — Chip/PIN Liability Shift
Fraud chargeback.
Code
4871 MastercardCategory
Fraud
What it means
Lost/stolen/never-received fraud on a chip+PIN card at a terminal without PIN support.
Evidence that wins
Proof of PIN verification.
How to prevent it
Use PIN-capable terminals.
Rules and deadlines differ by region and acquirer — always check the instructions in your PSP dashboard.