Code identifying which transaction is being referenced.

If either TRN08 or TRN09 is present, the other is required.

Code identifying an organizational entity or a physical location.

TRN02, TRN03 and TRN04 identify an organization.

Code designating the system/method of code structure used for Identification Code (67).

TRN03 through TRN09 shall be unique for a given transaction set.

Code identifying a party.

Reference number or identification number as defined for a particular Transaction Set, or as specified by the Reference Number Qualifier.

TRN05 identifies a further subdivision within the organization.

Unique Identifier for an Application Batch

TRN06 and TRN07 provide a batch- and item-level numbering scheme that shall be unique for each transaction within a company and subdivision.

Unique Identifier for an Item within an Application Batch

Code qualifying the Reference Number.

Reference number or identification number as defined for a particular Transaction Set, or as specified by the Reference Number Qualifier.

TRN09 provides further unique identification for the transaction.