The following general restrictions apply to all CICS® commands:
The restrictions that apply to CICS commands that access user data:
- The program must be in primary addressing mode when invoking any CICS
service. The primary address space must be the home address space. All parameters
passed to CICS must reside in the primary address space.
- CICS does not always preserve access registers across CICS commands or
macro invocations. If your program uses access registers, it should save them
before invoking a CICS service, and restore them before reusing them.