There is no need to IPL to make changes to the CAIRACF parms.
Following is the recommended process:
1. Create a new member that will include a single initialization statement to refresh the SSF service.
PRODUCT(CAIRIM) VERSION(CAS9) INIT(CAS9INIT) -
2. Make any necessary modifications to the member referenced by the CAIRACF DD statement (ie. RACFLIST) and save changes.
3. Start your CAS9 procedure with the following syntax to pass the new member on the startup. In this example, the new member was named "REFRESH: