Visa 12.6 quick reference: Cardholder claims the same transaction was processed more than once or that they paid by an alternate method (cash, another card, check). Merchant has 30 days to respond.
Cardholder's claim
"I was charged twice for the same thing, or I already paid another way."
Visa 12.6 is a processing-error dispute — the cardholder is not claiming fraud, they're claiming a duplicate. Wins here are almost mechanical: pull the two transactions in question and show either (a) they're distinct authorizations for distinct orders, or (b) the alternate payment method wasn't actually applied.
Response deadline
30 days to submit representment. From the chargeback date. Highly winnable if you can pull the transaction records quickly.
Common triggers
- Two authorizations captured to the same order (rare, usually a bug)
- Cardholder paid a partial amount with another method and disputes the residual
- Cardholder confused an authorization hold with a settled charge
- Legitimate duplicate — the merchant genuinely charged twice
Required evidence
Both transaction records
Timestamps, auth IDs, and amounts for both alleged charges — proving they're distinct.
Order records
Distinct order IDs, line items, and delivery details for each transaction.
Payment method proof
If cardholder claims payment by other means, records showing they didn't.
Refund history
Prove no refund was owed, or that any owed refund was already processed.
Typical win rates
| Scenario | Win rate | Notes |
|---|---|---|
| Distinct transactions, records pulled | 80–90% | Nearly always winnable |
| Alternate payment claim, records pulled | 70–85% | Depends on the alternate payment plausibility |
| Actual duplicate | 0% | Refund immediately — don't fight |
Win rates reflect Aurai's own book across Stripe, PayPal, and Shopify Payments as of July 2026, plus public MRC Global Fraud Survey 2024 baselines. Your results will vary.
Frequently asked questions
What does Visa 12.6 mean?
Visa 12.6 is the reason code for "Duplicate Processing / Paid by Other Means." Cardholder claims the same transaction was processed more than once or that they paid by an alternate method (cash, another card, check).
What's the response deadline for Visa 12.6?
Merchants have 30 days to submit representment. From the chargeback date. Highly winnable if you can pull the transaction records quickly.
What evidence is required to fight Visa 12.6?
Both transaction records, Order records, Payment method proof, Refund history. Full detail in the Required evidence section above.
Can Aurai handle Visa 12.6 automatically?
Yes — Aurai detects the reason code, assembles the specific evidence stack for it, and submits before the deadline. 25% only on disputes we win.
Reason code details reflect the current Visa rules as of July 2026 and may change. Visa is a trademark of its respective owner. Aurai is independent and not endorsed by Visa. Always check the current official rules before acting on any specific tactic.