Superseded SYSMODs

When one SYSMOD is superseded by another, SMP/E makes a record of this by adding the name of the superseding SYSMOD to the entry for the superseded SYSMOD.
  • When there is only one superseding SYSMOD, its name is saved in the LASTSUP subentry.
  • When there are several superseding SYSMODs, the name of the last one is saved in the LASTSUP subentry, and a complete list is saved in the SUPBY subentry.

If the superseded SYSMOD has not been previously applied, its target zone SYSMOD entry contains only the LASTSUP information. Such a SYSMOD entry is called a dummy entry. Because the superseded SYSMOD had not been previously applied, SMP/E does not know what type of SYSMOD it was (function, PTF, APAR, or USERMOD).