What is a Merchant Identiļ¬cation Number? A merchant identiļ¬cation number (MID) is a unique number that is assigned to a merchant by a credit card processor or bank. This number is used to identify the merchant when processing credit card transactions. The MID is typically printed on the back of credit cards and on sales receipts. The MID is different from the merchant account number, which is also assigned by a processor or bank. The merchant account number is used to identify the account that is being used to process credit card transactions. The MID is also different from the merchant category code (MCC). The MCC is a four-digit number that is assigned by the credit card issuer and is used to classify the type of business that the merchant operates. The MID is used by the processor or bank to route the credit card transaction to the correct account. The MID is also used by the credit card issuer to verify that the merchant has been properly registered with the credit card network. The MID is an important number for merchants because it helps to ensure that their credit card transactions are processed correctly. Merchants should always keep their MID in a safe place and should never give their MID to anyone who they do not trust. https://www.hostmerchantservices.com/
