Date on which credit memo or debit memo was issued or made effective.

If either G1606 or G1607 is present, then the other is required.

Number assigned by issuer of a credit or debit memo.

Invoice Issue Date.

Identifying number assigned by issuer.

Number assigned by a vendor referencing a particular customer purchase order.

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.