ISENDS
Intermediary system enablement or disablement message

UNH M Message header

BGM M Beginning of message

ATT M Attribute

DTM C Date/time/period

SG1 M
PNA
ADR
SG2

SG3 C
RFF
DTM

SG4 C
ICD
RFF
DTM
...

SG8 C
RNG
GEI
MOA
...

UNT M Message trailer