Mastercard Reason Code 4862

What is

A counterfeit card was used via magnetic stripe in a card-present transaction.

A cloned/counterfeit card's magnetic stripe was used at a terminal, rather than the chip.

Card-present only, rarely relevant to online storefronts.

Terminal transaction log showing how the card was read (stripe vs. chip).

Submit the terminal's transaction log showing the read method used.

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Still relying on magnetic-stripe fallback at terminals that support chip.

Disable or restrict magnetic-stripe fallback on EMV-capable terminals where possible.