Official company update
Mastercard GMAP: A Guide to What This Changes for Merchants
Justt·justt.ai·
What the source says
Mastercard revealed quietly in a bulletin update to acquirers on July 28, 2026 that it would fold its existing fraud and chargeback monitoring programs for merchants and acquirers into its new Global Merchant Audit Program (GMAP), starting April 1, 2027. GMAP replaces the old Acquirer Chargeback Monitoring Program. While Mastercard has yet to present GMAP […
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