What American Express C02 means
Your earlier inquiry response told Amex a credit was coming, but it never arrived or arrived for a smaller amount than you stated or than the dispute amount.
Common causes
- Refund promised in the inquiry reply but never processed in the store or gateway
- A partial refund that left a balance the Card Member still disputes
- Refund issued to a different card or as store credit without explanation
- Refund processed after the Card Member's statement closed
Evidence that answers it
- Refund record with date, amount and processor reference that matches the disputed charge
- If partial credit is correct, the policy or terms that justify keeping the remainder (restocking fee, non-refundable deposit)
- The customer conversation where the refund amount was agreed
How to prevent it
- Process promised credits immediately; Amex policy asks merchants to submit credits within 7 days of determining one is due
- Tell the Card Member the date and amount of the credit
- Never tell Amex a credit is coming unless it has already been submitted
Time limits and caveats
If the credit really is owed and has not been issued, accepting the chargeback is cheaper than refunding now, which risks a double credit.
How Verdikx helps with C02
Verdikx's credit-not-processed playbook pulls the refund record from Shopify or Stripe and Loop return outcomes (beta) so you can see at once whether the credit actually posted. If it did not, the playbook tells you to accept rather than fight. The AI draft cites the refund reference for your review.
Frequently asked questions
What does American Express reason code C02 mean?
Amex C02 means American Express has not received a credit you said was being issued, or received less than you specified. It usually follows an inquiry where you promised a refund. Win by proving the offsetting credit posted, or by explaining in writing, with documents, why no credit or only partial credit is due.
Is American Express C02 worth fighting?
Our reference rates C02 (Credit Not Processed) sometimes winnable, depending on the evidence you have. The evidence that answers it starts with refund record with date, amount and processor reference that matches the disputed charge. The cardholder's bank decides the outcome.
How long does a cardholder have to file a American Express C02 chargeback?
Usually 120 days from the transaction date, under the network's issuer time limits for most codes. Your processor gives you far less time to respond, so work from the due date on the case.
Answer your next C02 with the right evidence.
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Sources
- American Express: How to Manage and Help Prevent Disputes (US reference guide, version 2024PROP) (checked October 5, 2026)
Last reviewed by Verdikx Research.