Reason code · Mastercard
Mastercard 4863: cardholder does not recognize
4863 means the cardholder looked at their statement and didn’t recognize the charge. It’s an older code that doesn’t appear in Mastercard’s current Chargeback Guide, where fraud claims run as 4837. Some processors still show it, so check your notice for the deadline.
What 4863 means
4863 is an older Mastercard code: Cardholder Does Not Recognize, Potential Fraud. The cardholder saw a charge on their statement, couldn’t place it, and flagged it as possible fraud.
Not so fast on looking up its rules. 4863 doesn’t appear in Mastercard’s current Chargeback Guide. There, fraud claims run through 4837 No Cardholder Authorization and a few chip-specific codes. Some processors still show 4863, and Stripe’s monitoring page still counts it alongside 4837 as a fraud chargeback. So treat it as a fraud claim and ask your processor which current rule the bank is using.
What the customer told their bank
“I don’t know what this is.” Often the customer did buy it. The name on their statement just didn’t match the business they remember, or someone else in the household made the purchase.
Time limit
There’s no current rule text for 4863 itself, so go by the dates on your notice. If the bank is handling it as a 4837 fraud claim, it had 120 calendar days from the transaction to file. Your response is due on the date your processor gives you, which is always shorter than the bank’s window.
What proof matters
Anything that helps the cardholder recognize the purchase and ties them to it: the receipt or invoice in their name, what they bought and when, and where it was delivered or used.
Why it matters even when you win
Mastercard counts chargebacks in its monitoring programs no matter who wins them. Stripe says fraud chargebacks coded 4837 or 4863 count toward Mastercard’s Excessive Fraud Merchant program. Every unrecognized charge you prevent is one fewer on that count.
The common mistake
A statement descriptor nobody recognizes. If your card statement name is a parent company or an abbreviation, customers won’t connect it to you. That turns honest customers into “unrecognized” disputes. Fix the descriptor and the disputes often shrink.
Dispute Daddy builds this for you
Dispute Daddy reads the notice, works out which claim you’re really answering, and builds the response from your records for you to approve. See how the method works.
