Network
AmexCode
C02Response window
20 calendar daysWin difficulty
Easy–MediumDispute type
Consumer DisputeAmex C02 — Credit Not Processed: 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.
C02 is one of the most winnable Amex dispute codes — if you've already issued the credit. Show proof of the refund date and amount and this dispute resolves quickly.
C02 is Amex's equivalent of Visa 13.6. The cardholder returned merchandise or cancelled a service and was promised a refund that hasn't appeared on their statement. There are two distinct situations: either you issued the credit (prove it and win) or you didn't (issue it now or defend with your return policy).
The dispute is not about whether the return happened — it's about whether the credit was processed. If the credit exists in your processor records, this dispute resolves quickly. If you legitimately declined the return (outside your policy), your documented policy is the defence.
Common reasons you received this dispute
- 1Timing gap between credit issued by you and statement posting — the cardholder filed before the credit appeared
- 2Credit was issued to a different payment method or gift card instead of the original Amex card
- 3Partial credit was issued when the cardholder expected a full refund
- 4Return was outside your policy and refund was declined — cardholder disputed instead of pursuing through other channels
Can you win this dispute?
Fight this dispute if...
- ✓Credit was already issued — show the confirmation with date and amount
- ✓Return was outside your clearly communicated return policy
- ✓Cardholder kept the merchandise but still requested a refund
Accept this chargeback if...
- ✗You owe the refund and haven't issued it — process it immediately and accept the chargeback
Evidence checklist
- ✅ Required
Credit confirmation with date and amount: The processor confirmation showing the credit was issued, including the exact date and amount. This is your primary evidence and resolves the dispute immediately if the credit was processed correctly.
- ✅ Required (if policy dispute)
Return policy as communicated at purchase: Your return policy exactly as it was displayed or provided to the customer at the time of purchase — website screenshot, order confirmation, or receipt. Must show the policy was visible before checkout, not buried in T&Cs.
- ⭐ Strongly recommended
Customer's return request and your acknowledgment: Any communication between you and the customer about the return, including your response stating when and how the credit would be issued (or why it was declined).
- ○ If available
Email confirming refund was processed: If you sent a refund confirmation email to the customer, include it. This shows the cardholder was notified and had reason to wait for the posting.
How to write your response
If the credit was already issued, your response is straightforward: cite the date, amount, and your processor's confirmation. Note the typical posting timeline so Amex understands the cardholder may have filed before seeing the credit.
If the return was outside your policy, reference the specific policy terms and evidence they were communicated at purchase. Explain clearly why the return did not qualify for a refund.
“We are writing to dispute chargeback [reference] under Amex reason code C02. A credit of [amount] was issued to the cardmember's account on [date]. Exhibit A is the credit confirmation from our payment processor showing the credit was processed on [date]. Credits typically appear within 3–10 business days. We respectfully request reversal of this chargeback.”
Key deadlines
Response window: 20 calendar days from the notification date. This is shorter than Visa (30 days) or Mastercard (45 days) — respond immediately.
If you haven't issued the refund yet and it is owed, process it before responding — this simplifies your case and may allow the dispute to resolve without a formal response.
How to prevent this chargeback
- 1
Send refund confirmation email immediately: The moment a refund is processed, send an email confirmation to the customer with the amount and expected posting timeline. This prevents premature disputes from customers who don't know the credit is on its way.
- 2
State realistic posting timelines: Include in your refund confirmation that credits typically take 3–10 business days to appear. Customers who know to wait are far less likely to dispute before the credit posts.
- 3
Audit refund systems monthly for silent failures: Refunds that fail silently — where your system shows a credit issued but the payment processor never received it — are a major source of C02 disputes. Run a monthly reconciliation between your refund records and processor settlements.
Frequently asked questions
What is Amex C02?
Amex C02 is filed when a cardholder returned merchandise or cancelled a service and was promised a refund that has not appeared on their statement. It is the Amex equivalent of Visa 13.6 — the dispute is about whether the credit was issued, not about fraud or delivery.
Can I win if I already issued the refund?
Yes — this is one of the most winnable Amex dispute codes if the credit was already processed. Submit the credit confirmation from your payment processor showing the date and amount. Amex will close the dispute in your favour once they verify the credit was issued.
What if the return was outside my return policy?
Fight the dispute with your return policy as communicated at the time of purchase. Provide the policy wording (from your website, receipt, or order confirmation) along with evidence showing the customer was informed of the policy before they bought. If the policy was clearly communicated and the return falls outside it, you have strong grounds to contest C02.
How is C02 different from Visa 13.6?
C02 and Visa 13.6 are functionally identical — both cover refund-not-received situations following a return or cancellation. The key difference is the response window: Amex gives you 20 calendar days versus Visa's 30 calendar days. Act faster on C02 disputes.
Related reason codes
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