WKGRRE
Work grant request message

UNH M Message header

BGM M Beginning of message

DTM M Date/time/period

QTY C Quantity

SG1 M
PNA
ADR
LOC
...

SG3 C
RFF
DTM

SG4 C
GIS
FTX

UNS M Section control

SG5 M
RFF
DTM
SG6
...

UNT M Message trailer