SUBSYSTEM MEMBER field

The value of the SUBSYSTEM MEMBER field specifies the last two characters (xx) of the name of member IEFSSNxx of SYS1.PARMLIB.

Acceptable values: 2 alphanumeric characters
Default: 00
Update: see DSNTIPM: MVS PARMLIB updates panel
DSNZPxxx: none

The subsystem member name indicates the available z/OS® subsystems, including Db2 and IRLM.