VM systems with ESCON
Although you must run the BBXSINIT procedure to initialize BBXS, VM systems with ESCON capabilities do not allow the retrieval of the configuration data by the BBXSINIT program, unless z/OS is running under VM/ESA.
To provide retrieval of I/O configuration data for VM/ESA systems with ESCON capabilities, you must specify RMCHINFO on the VM directory options statement. The RMCHINFO parameter tells VM/ESA that it should allow the guest z/OS to request channel and I/O configuration data.
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