Reference pagesReason codes
Fraud
American Express F30: EMV counterfeit
An American Express dispute reason code, what it asks you to prove, and what Do The Proof puts in the response.
What this code means
Counterfeit chip card, no chip read
What the network says wins it
AUTH: chip data
- Authorization and processing records
How the app handles it
Arrives in the app as: Fraudulent
Proof this usually needs
- Customer email
- Billing address
- Shipping address
- Tracking number
- Delivery confirmation
- Customer name
- Checkout IP
- Access activity
What the app cannot collect for you
Access activity. If you have login, download or usage records for this customer, add them to your dispute response. Records like these live on your own systems rather than in Shopify, so they have to come from you.
How long you have to respond
- Merchant response
- 20 days from the inquiry or chargeback notice
Where this comes from
- American Express, Merchant Regulations International, 17 April 2026
- Stripe, reason code categories Accessed 8 September 2026.
Other American Express fraud codes
Do The Proof drafts dispute responses for Shopify stores.
You pay when a dispute is won. Not before.