Verify that the default superuserid ( usually called BPXROOT ) defined in BPXPRMxx is defined
in SAF/RACF as a valid loginid.
SYS1.SAMPLIB(BPXISEC1) member:
/********************************************************/
/* Block 6 - Defining BPXROOT user */
/* */
/* In order for daemon processes to be able to invoke setuid() for */
/* superusers, define a superuser with a user ID of BPXROOT on all */
/* systems. */
/* */
/* On the SUPERUSER statement in the BPXPRMxx parmlib member */
/* specify the user ID that the kernel will use when you need a */
/* user ID for UID(0). */
/* */