Amex reason code A08
Amex A08: Authorization Approval Expired
What the cardholder is claiming
Amex says you submitted the charge after the authorization approval had already expired, so the approval you obtained no longer covered the transaction when it settled.
The evidence that actually wins
Bank analysts skim responses in minutes against a checklist for this exact code. Lead with the strongest fact; never make them dig.
- ✓Authorization date and settlement date records showing submission fell inside the validity window
- ✓A re-authorization obtained before capture, covering the final settlement date and amount
- ✓Industry-specific rules granting your merchant category a longer authorization window, with the transaction inside it
- ✓Documentation of a delayed-delivery arrangement where authorization timing matched shipment per card network rules
The honest read
Like the other authorization codes, this is decided on timestamps, and you should pull yours before deciding anything. The common real-world cause is a backorder or delayed shipment where the card was authorized at order time and captured weeks later at fulfillment; the fix is re-authorizing at shipment, not arguing the old approval should still count. If your capture genuinely fell outside the window, the chargeback is technically correct even though the member got the goods, and your recovery path is usually rebilling with a fresh authorization where your agreement permits, not fighting the code.
Nobody can promise you a win; the cardholder's bank decides. What you control is submitting the strongest complete case your records support, on time. Our plain-language guarantees say exactly what that means.
Fighting a A08 right now?
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