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Merchant Identification Number (MID)

Merchant Account Glossary M Merchant Identification Number (MID)

A merchant identification number (MID) is a unique number that is assigned to a merchant account, that makes it possible to identify the specific account throughout the course of daily processing activities.

A merchant identification number is similar to the license plate number on an automobile in the way that each one is different, and each one represents a specific merchant account.

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