The information used to generate the utility work files (SYSUT1 through SYSUT4) may be obtained from DDDEF entries or from GIMDDALC control statements specified in SMPPARM member GIMDDALC. If there is no DDDEF entry for a work file, there must be a GIMDDALC control statement in SMPPARM member GIMDDALC. For more information about specifying GIMDDALC control statement, see the GIMDDALC section in SMP/E for z/OS Reference.

When SMP/E generates assembly steps, it needs a temporary library to store the resulting object module. To generate the GIMDDALC statement for this work file, SMP/E looks for a SYSPUNCH DDDEF entry or for a SYSPUNCH GIMDDALC control statement in SMPPARM member GIMDDALC.