The hardcopy message set represents those messages that can be queued to the system log or OPERLOG. See z/OS MVS Planning: Operations for information about controlling and modifying the hardcopy message set definition.
Extended MCS consoles can also receive the hardcopy message set. To request that an extended MCS console receive the hardcopy message set, issue the MCSOPER macro with REQUEST=ACTIVATE, and specify the HARDCOPY attribute in the OPERPARM parameter list. Specifying console attributes describes how to specify operator parameters.
You can also request that an extended MCS console receive the full hardcopy message set from all the systems in a sysplex, by specifying the MSCOPE=*ALL console attribute. Any route codes specified for a console do not apply for hardcopy messages, so users should be aware that the console will receive all hardcopy messages, regardless of their specific route code. Note that this might cause performance problems. The default for MSCOPE in a sysplex environment is ALL systems.