Amex Reason Code F14: Missing Signature

What Amex reason code F14 means

F14 is a card-present fraud code from the era when a signature was the main way to verify a Card Member at the counter. The Card Member denies participating, and the merchant has no signed record of charge for a transaction where a signature was required.

American Express removed the signature requirement for card-present sales in most markets around 2018, and chip, PIN and contactless verification have largely replaced signatures. As a result, F14 is uncommon today. It can still appear where local rules or specific transaction types require a signature, or where older documentation is requested.

If you sell online, F14 effectively doesn’t apply to you. Fraud claims on card-not-present orders come through as F29.

Common causes

• Transactions in markets or programs that still require a signature
• Lost, faded or unreadable receipts that can’t be produced when requested
• Terminals configured to skip signature capture on charges that needed it

Check the transaction first

Before gathering evidence, confirm how the card was read. If the terminal log shows a chip-and-PIN or contactless read, that’s both the cardholder-verification record and strong proof the genuine card was present, which usually matters more than a signature.

Evidence that wins an F14 dispute

1. The signed record of charge, if one exists, or an electronic signature capture from the terminal.
2. Proof no signature was required: terminal data showing chip-and-PIN or another verification method, and your market’s rules on signature requirements.
3. Other proof of participation: chip read data, CCTV, loyalty account use, or pickup records.

Why F14 still appears

Even with the signature requirement largely gone, an F14 can follow an older transaction, or one in a market or program where a signed record of charge is still expected. If you receive one, first check whether a signature was required for that transaction at all.

How to prevent F14 disputes

• Keep terminals up to date so cardholder verification follows current Amex requirements for your market.
• Store receipts and electronic signature captures for as long as your agreement requires.
• Use chip and contactless reads, which give you stronger evidence than a signature ever did.

Should you fight or accept?

Fight if you can produce the signature, or show that no signature was required and the card was read by chip or contactless.

Accept when a signature was required and you can’t produce it, and you have no other proof the Card Member was present.