Visa 12.6.1: Duplicate Processing
Processing ErrorsDefense: MixedMATCH relevance: Low
Issuer filing window
120 days from transaction date
Merchant response window
30 days
The same transaction was processed more than once. Common in retry logic that mistakenly resubmits an already-approved transaction.
Compelling evidence for 12.6.1
- Authorization logs showing transactions are distinct (different amounts, timestamps, descriptors)
- Refund issued for any actual duplicate
Visa 12.6.1 questions.
How long do I have to respond to a Visa 12.6.1 chargeback?
30 days from notification. Missing the response window normally forfeits the dispute, whatever the merits of your case.
How long can the issuer wait before filing 12.6.1?
The issuer filing window for 12.6.1 is 120 days from transaction date.
How hard is 12.6.1 to defend?
Defense difficulty for this code is rated Mixed in our catalogue. The evidence list above is what the schemes accept for this code.
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