The GIMCPTS service routine is used to compact or expand inline element data within SYSMODs. The inline element data can be compacted prior to receiving a SYSMOD or SYSMODs already received can be compacted.
SYSMODs with their inline element data compacted require less space, so the space requirements of the SMPPTS data set should be reduced. Of course, SMP/E APPLY and ACCEPT processing will expand any compacted inline element data prior to installing the element in a target or distribution library respectively.
GIMCPTS can also be used to expand the inline element data within a SYSMOD. This could be useful if you need to send the SYSMOD to another system where the SMP/E installed on the other system cannot handle compacted inline element data. It could also be useful for viewing inline data. Note that the SMP/E Query Dialogs can be used to view MCS entries from the SMPPTS data set and that SMP/E expands the inline element data before displaying it.