Infrastructure

TID (Terminal Identification Number)

Definition

TID (Terminal Identification Number) a unique identifier for a specific payment terminal or point-of-sale device. Each physical terminal or virtual terminal has its own TID. A single MID can have multiple TIDs for different locations or channels. TIDs help with transaction routing, reporting, and terminal-specific configurations.

Related Terms

MID (Merchant Identification Number)

A unique identifier assigned to a merchant account, used to identify the merchant in card network transactions. The MID appears in transaction records and is used for routing, reporting, and dispute management. PayFac sub-merchants typically share their PayFac's MID rather than having their own. Having your own MID provides more control but requires direct underwriting.

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