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Amex M01: Chargeback Authorization

What it means: The chargeback was raised under a network program (for example a fraud full-recourse or immediate-chargeback program) rather than a standard cardholder dispute.

M01 means the merchant (or its processor) authorized American Express to charge the transaction back — check your account / processor records.

How to respond: Ordinary evidence often cannot reverse program chargebacks. Contact your processor to confirm whether a response is possible and why your account is in the program.

Stripe usually labels this dispute as: general (check the reason shown on your dispute — Stripe maps network codes to its own categories).

Evidence checklist

• Program notification details from your processor
• Receipt / invoice showing what was purchased, price, date and the customer's details
• Customer communication (emails, chat, support tickets) — especially anything where the customer acknowledges the order or the product

Tips

• Address the specific reason code — a generic letter that argues the wrong issue is a common reason responses fail.
• Submit before the evidence due date shown in your Stripe/Shopify dashboard; most processors allow one submission.
• Keep it factual and concise; label each exhibit.
• If the customer is right, accepting the dispute or refunding may cost less than fighting it.

DisputeDesk provides general information and document preparation help. It is not legal advice, and we do not guarantee any dispute outcome — the card issuer decides. Reason-code names and rules change; always check the dispute details in your Stripe or Shopify dashboard and the card network's current rules.
DisputeDesk is operated by Avenbridge Technology Limited (Hong Kong). Privacy