Network
AmexCode
C14Response window
20 calendar daysWin difficulty
MediumDispute type
Processing ErrorAmex C14 — Paid by Other Means: What It Is and How to Respond
⚠️ 20-Day Deadline: American Express gives you only 20 calendar days to respond — shorter than Visa (30 days) or Mastercard (45 days). Act within 48 hours of receiving notification.
C14 is Amex's equivalent of Visa 12.6.2. The cardholder paid for the transaction using a different payment method — cash, check, or another card — and was also charged to their Amex card. The result is that the cardholder was effectively charged twice: once per payment method, for what they believe to be the same transaction.
This is a processing error dispute, not a consumer behaviour dispute. The question is whether the Amex charge and the alternative payment were genuinely separate, distinct transactions — or whether they were the same purchase charged twice via different methods.
Common reasons you received this dispute
- 1Cash was accepted at the POS but the Amex card was also charged before the cash payment was recorded
- 2Two payment methods were used at checkout but only one was intended — card was processed through an error
- 3Customer paid with a different card but Amex was also processed due to a terminal or operator error
Can you win this dispute?
Fight this dispute if...
- ✓The Amex charge and the alternative payment were for separate, distinct transactions — provide order records showing they are different purchases with different order IDs, items, or amounts
Accept this chargeback if...
- ✗The customer genuinely paid twice — process the refund for the Amex charge immediately
Evidence checklist
- ✅ Required (if fighting)
Separate order records for each transaction: Documentation showing the Amex charge and the cash/alternative payment relate to distinct purchases — different order IDs, different items, different timestamps, or different amounts. Your order management system export is the most authoritative source.
- ✅ Required (if resolving)
Credit confirmation: If you are accepting the dispute and issuing the refund, provide the processor credit confirmation with date and amount before or alongside your response.
- ⭐ Strongly recommended
Any customer communication about the specific transaction: Emails or messages where the customer describes the transaction in question — useful to establish context and identify whether they are referring to a single or multiple purchases.
Key deadlines
Response window: 20 calendar days from the notification date.
C14 vs P08: if the Amex card was charged twice (same method, same transaction), the relevant code is P08. C14 is specifically about two different payment methods being used for what the cardholder believes was one transaction.
Frequently asked questions
What is Amex C14?
Amex C14 is filed when a cardholder paid for a transaction using a different payment method — cash, check, or another card — and was also charged to their Amex card for the same transaction. The cardholder was effectively charged twice: once via the alternative method and once via Amex. It is the Amex equivalent of Visa 12.6.2.
How do I prove the transactions were for different purchases?
Provide separate order records for each transaction — showing different order IDs, different items or services, different timestamps, or different amounts. If you have a POS receipt for the Amex charge and a separate receipt for the cash or other-card payment, both together demonstrate they are distinct transactions. Your order management system export showing both transactions as separate line items is particularly strong evidence.
How is C14 different from P08 (duplicate charge)?
C14 means the cardholder paid twice using two different payment methods — for example, cash at the counter plus an Amex charge. P08 means the same Amex card was charged twice for the same transaction. The distinction matters for your defence: C14 requires you to either prove the transactions are for separate purchases, or accept and refund the Amex charge.
How can I prevent C14 disputes?
Run a daily reconciliation between your POS cash/alternative-payment records and your card processing records. Any transaction where both a cash or alternative-payment receipt and a card charge exist for the same amount, same customer, and same date should be flagged for review. Most C14 disputes arise from POS operator error at checkout — training staff to confirm payment method before processing is the first line of defence.
Related reason codes
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