BCP Internal Interface
For processor hardware automation in a sysplex environment, this link allows a z/OS system directly to communicate with its own hardware SE, as well as the SEs of other hardware which are part of a cluster of processors.
This cluster must be defined to the Master HMC in a processor environment. If a sysplex processor hardware is to be automated, the processor hardware of all sysplex members must be defined to the Master HMC.
See also Understanding the BCP Internal Interface.