10.5
What Visa reason code 10.5 means for merchants
Code 10.5 is the Visa Fraud Monitoring Program. It is the one code that lets an issuer dispute the same sale twice.
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A chargeback notice with Visa reason code 10.5 is different from most fraud disputes. It does not claim a specific fraud type. It says Visa itself flagged the sale. Here is what that means and what to do about it.
What is Visa reason code 10.5?
Visa sorts disputes into four categories: 10 Fraud, 11 Authorization, 12 Processing Errors and 13 Consumer Disputes. Code 10.5 sits in the fraud group, but it works unlike the rest.
Under 10.5, Visa told the issuer its Visa Fraud Monitoring Program flagged the sale, and no other dispute condition worked. So the code is a last resort. The issuer could not fit the claim into a normal fraud code, so it used this one.
A Visa dispute is how a card issuer sends a contested transaction back. If the dispute is valid, the acquirer takes the disputed amount from the merchant account and tells the merchant.
How 10.5 differs from other fraud codes
Most fraud codes point to a clear claim. Code 10.3 covers fraud in a card-present sale. Code 10.4 covers fraud when the card was not present. Each one names a situation, and each one points to the proof that answers it.
Code 10.5 does not name a situation. It names a program. The claim is that Visa's own monitoring caught something, and that no other code fit. That makes the dispute harder to read, because the notice does not tell you what the cardholder says happened.
Why 10.5 allows multiple disputes on the same transaction
This is the part that makes 10.5 unique. Condition 10.5 is the one exception that lets an issuer dispute the same transaction more than once.
With every other code, one dispute is all the issuer gets. An acquirer may respond only once to the original Visa dispute, and the case moves on or ends. Under 10.5, the issuer can come back to the same sale again.
So a 10.5 case can feel like a loop. You answer one notice, then a new one arrives for the same transaction. That is allowed under this code, even though it is not allowed elsewhere.
How to respond to a 10.5 chargeback
A merchant can accept a Visa dispute, or reject it by sending supporting documents to its card processor. Each step of a Visa dispute has a set time limit, so a late answer can lose the case. Start as soon as the notice arrives.
To fight a 10.5 dispute, show a credit or reversal the issuer ignored, or that the dispute is invalid. Those are the two paths. If you already refunded the cardholder and the issuer still disputed the sale, the refund record is your answer. If the dispute itself is flawed, say so and explain why.
Visa dispute evidence must be easy to read and in English, or come with an English translation. Keep your papers clear and organized.
If you are not sure what your notice says, start with how to read a chargeback notice.
Compelling Evidence and 10.5
Compelling Evidence is proof from the merchant that the cardholder took part in, received, or benefited from the transaction. It is a strong tool in fraud cases.
But it has limits here. Visa lets merchants send Compelling Evidence for conditions 10.1, 10.3 and 10.4. Code 10.5 is not on that list.
That does not leave you with nothing. A credit or reversal record, or proof the dispute is invalid, still works under 10.5. The evidence just has to fit the code. If your case moves into later rounds, see what happens after you answer a chargeback for the steps that follow.