Visa 12.6 covers duplicate processing OR 'paid by other means'. The cardholder claims they were charged twice, or that they paid an alternate way (cash, another card, check). Win rate for well-represented cases: 80–90%. Losses happen because merchants either can't pull the transaction records fast enough OR because the merchant actually did charge twice. If both transactions are distinct, this is one of the fastest disputes to close.
What Visa 12.6 covers
Visa 12.6 is "Duplicate Processing / Paid by Other Means." It lives in Visa's Processing Errors category (Category 12). The cardholder isn't claiming fraud or non-receipt — they're claiming a duplicate charge or an alternate payment.
The merchant's defense is simple: prove the two transactions are distinct (not duplicates) OR prove the alternate payment method wasn't applied. Both are usually mechanical — pull records, show timestamps.
Common triggers
Common triggers:
- Two authorizations captured to the same order (rare, usually a bug)
- Cardholder paid a partial amount another way and disputes the residual
- Cardholder confused an authorization hold with a settled charge
- Legitimate duplicate — the merchant genuinely charged twice
The last one is fatal: if you actually did charge twice, refund immediately and skip representment. The evidence packet would just prove the cardholder correct.
Evidence stack
For a 12.6 defense:
- 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.
Cover narrative: three sentences. "Cardholder claims duplicate processing on transactions X and Y. Records attached show these are distinct transactions for distinct orders on [date] and [date]. No refund is owed."
Win rates
- Distinct transactions, records pulled: 80–90%
- Alternate payment claim, records pulled: 70–85% (depends on the alternate payment plausibility)
- Actual duplicate: 0% — refund immediately, don't fight
The critical lever is speed. Visa 12.6 has a 30-day response window. If you can pull the transaction records in under a week, you win the majority of these cases. If you defer to day 25, you're often scrambling and miss details.
Frequently asked questions
What is Visa 12.6?
"Duplicate Processing / Paid by Other Means." Cardholder claims they were charged twice or that they paid an alternate way.
What's the win rate for Visa 12.6?
80–90% for well-represented cases where the two transactions are actually distinct. 0% if the merchant actually did charge twice.
What's the response deadline?
30 calendar days from the chargeback date.
Post reflects public documentation, industry surveys, and Aurai's own book of disputes as of the publish date. Visa, Mastercard, American Express, Discover, Stripe, PayPal, and Shopify are trademarks of their respective owners; Aurai is independent and not endorsed by any of them. Network rules change — always verify current official rules before acting on any specific tactic.