American Express Reason Code F10

A card-present sale is missing the required manual card imprint on the receipt.

A manual/offline transaction was processed without the physical card imprint Amex requires as proof of card presence.

Only relevant to in-person or manual-imprint transactions, essentially never applies to online checkout.

A valid card imprint or equivalent proof of physical card presence at time of sale.

Processing manual/offline card transactions without taking a proper imprint.