To indicate batch identifying information.
R0103: At least one of BAT-01 or BAT-03 is required
Time expressed in 24-hour clock time (HHMMSS) (Time range: 000000 through 235959)
Reference number or identification number as defined for a particular Transaction Set, or as specified by the Reference Number Qualifier.
BAT03 is the batch number.
Code indicating batch status to customer of lockbox facilities.