What Mastercard 4849 means
Mastercard has named the merchant in an announcement under QMAP, or substantiated a coercion claim. Issuers can then charge back eligible fraud-reported transactions.
Common causes
- Merchant identified in a Mastercard QMAP announcement
- Substantiated claims that the merchant pressured cardholders into transactions
Evidence that answers it
- Proof the merchant was not listed in the relevant Mastercard announcement
- Proof the transaction was not properly reported to the Fraud and Loss Database, or was an ineligible fraud type
- Proof the chargeback was filed late, or a refund was already issued
How to prevent it
- Keep fraud and dispute levels low and work with your acquirer on any program notice
- Avoid high-pressure sales practices
Time limits and caveats
Fraud-related family (4837, 4849, 4870, 4871). Rare for legitimate e-commerce merchants.
How Verdikx helps with 4849
Verdikx maps 4849 to its fraud playbook, but this is a program chargeback: check eligibility with your acquirer rather than drafting a merchandise rebuttal. Verdikx's order screening on new Shopify orders and Stripe early fraud warnings help keep fraud levels away from program thresholds.
Frequently asked questions
What does Mastercard reason code 4849 mean?
Mastercard 4849 Questionable Merchant Activity applies when Mastercard lists the merchant for violating its Questionable Merchant Audit Program (QMAP) or finds the merchant performed coercive transactions. It is a program chargeback, not a cardholder claim. Defend only on technical grounds, such as the merchant not being listed or improper fraud reporting.
Is Mastercard 4849 worth fighting?
Our reference rates 4849 (Questionable Merchant Activity) usually one to accept: a response rarely changes the outcome. The evidence that answers it starts with proof the merchant was not listed in the relevant Mastercard announcement. The cardholder's bank decides the outcome.
Answer your next 4849 with the right evidence.
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Sources
- Mastercard Chargeback Guide, Merchant Edition (13 May 2025) (checked October 5, 2026)
Last reviewed by Verdikx Research.