Reference pagesReason codes
Processing error
Visa 12.5: Incorrect Amount
A Visa dispute reason code, what it asks you to prove, and what Do The Proof puts in the response.
What this code means
Amount altered or keyed wrong
What the network says wins it
AUTH: transaction receipt
- Authorization and processing records
How Do The Proof handles it
Arrives in Do The Proof as: General
How long you have to respond
- Merchant or acquirer response
- 30 days at each phase
- Cardholder dispute window
- 120 days, or 540 days for delayed delivery
Allocation disputes, which are the 10 and 11 codes, assign liability automatically and can only be contested through pre-arbitration.
Collaboration disputes, which are the 12 and 13 codes, take a merchant response, then issuer pre-arbitration, then arbitration.
Where this comes from
- Visa, Dispute Management Guidelines for Visa Merchants, June 2024 Read 2026-09-08.
- Stripe, reason code categories Read 2026-09-08.
Other Visa processing error codes
Do The Proof drafts dispute responses for Shopify stores. Connect store