In Visual Matrix, the "Visa/Mastercard" posting subcategory is used by default because Visa and Mastercard are typically processed under the same merchant account and itemized together. As a result, the default codes in the system (e.g., "VS" for "Payment Visa/Mastercard") represent both card types.
If your property has created a standalone accounting code for Mastercard, it will still be categorized under the "Visa/Mastercard" subcategory. When the system processes an automated payment or refund and cannot specify a unique code, it defaults to the first matching code within the "Visa/Mastercard" subcategory—usually the "Refund Visa" code. In reports such as the daily summary or operator cash-out, all transactions in the "Visa/Mastercard" subcategory are grouped together.
We understand this setup may cause confusion for properties treating Visa and Mastercard as separate accounts. As part of our ongoing localization efforts, we are actively exploring potential updates to better accommodate these regional differences.