American Express uses lettered families: A for authorization, C for consumer disputes, F for fraud, and P for processing errors. Authorization codes carry a short 20-day evidence window while most consumer and fraud codes allow up to 120 days, so triage Amex disputes by family first and answer the specific claim.
Find the code from your dispute notice below and open it to see what the code means, the response strategy for its dispute category, the evidence checklist to gather, and the evidence window you have to submit through your payment processor. Always respond inside the window - a late rebuttal forfeits the dispute regardless of merit.