IOCDS= parameter
The IOCDSRES parameter identifies the resident IOCDS ID that BBXS will use during initialization.
It has values Ax or Bx, where x is a number that may be as high as 7, depending upon your processor. The number refers to the IOCDS within the Processor Controller File. You must obtain and use the correct IOCDS ID. There may be separate IOCDSs for each LPAR in your system.
You can make z/OS automatically start BBXS initialization in an z/OS system running under VM by defining the sample statement (as in the following figure) within a COMMNDxx member of SYS1.PARMLIB.
Figure 1. COMMNDxx statement for BBXS initialization in a z/OS system under VM
This statement assumes that you renamed the sample @BBXINIT procedure to BBXSINIT when you copied @BBXINIT from the BBSAMP data set to your SYS1.PROCLIB data set during customization.