What is the win rate for Amex P01 disputes?

Industry-observed representment win rate for Amex P01 (Unassigned Card Number) averages around 18% when the correct evidence is submitted within the network's response window.

What evidence is required to fight a Amex P01 chargeback?

To dispute Amex P01, acquirers typically require: Auth records.

Amex · P01Authorization18% industry win rate

Unassigned Card Number

Transaction processed on invalid PAN.

Required evidence

Auth records

Playbook

Rare. Fix validation at gateway.

Amavest auto-bundles this

When a dispute hits your Stripe account with code P01, Amavest pulls the evidence above, drafts the response, and submits it before the deadline.

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Related authorization codes

Visa · 11.1
Card Recovery Bulletin
Visa · 11.2
Declined Authorization
Visa · 11.3
No Authorization
Discover · UA02
No Authorization

Frequently asked questions

What does Amex chargeback reason code P01 mean?: Transaction processed on invalid PAN.
What is the win rate for Amex P01 disputes?: Industry-observed representment win rate for Amex P01 (Unassigned Card Number) averages around 18% when the correct evidence is submitted within the network's response window.
What evidence is required to fight a Amex P01 chargeback?: To dispute Amex P01, acquirers typically require: Auth records.
How should a merchant respond to a Amex P01 dispute?: Rare. Fix validation at gateway.