Mapping storage for the parameter list

IBM® supplies mapping macros to aid in constructing the SVC 99 parameter list. They are:

Mapping Macro Purpose
IEFZB4D0 Provides symbolic names (DSECTs) for the positional information in the structure.
IEFZB4D2 Provides mnemonics for the text units.

The names in Figure 1 are those assigned by the macro IEFZB4D0. For a complete list of the fields mapped by IEFZB4D2 and IEFZB4D0, see z/OS MVS Data Areas in the z/OS Internet library.

Note: DYNALLOC stores only the information retrieval text units originally specified by the caller and validated by the IEFDB401 exit routine (see z/OS MVS Installation Exits). Text units added or modified by IEFDB401 are not stored in the calling program's storage.
Parent topic: Building the SVC 99 parameter list