Code identifying which transaction is being referenced

Reference information as defined for a particular Transaction Set or as specified by the Reference Identification Qualifier

TRN02 provides unique identification for the transaction.

A unique identifier designating the company initiating the funds transfer instructions, business transaction or assigning tracking reference identification.

TRN03 identifies an organization.

Reference information as defined for a particular Transaction Set or as specified by the Reference Identification Qualifier

TRN04 identifies a further subdivision within the organization.