Credit card rewards: When the wrong Merchant Category Code can be costly for cardholders
Businesses are categorised by a unique number called the Merchant Category Code. This determines what rewards you get, or not. When a wrong MCC is configured in the banking system, it could land you in trouble, besides depriving you of your rewards.
International Organization For Standardization Merchant Category Code International Organization Merchant Discount Rate Impact Of Wrong Mcc Ncorrect Mcc
Source: moneycontrol.com