Restrictions for console names

Console names must be from 2 to 8 characters and cannot start with a digit. Characters are alphanumeric and can also include the characters #, $, and @. When naming MCS consoles, do not use the following names:

HC
INSTREAM
INTERNAL
LOGON
LOGOFF
OPERLOG
SYSIOSRS
SYSLOG
UNKNOWN

Note about SYSIOSRS

Console name SYSIOSRS is reserved for system use.

The IOSAS address space must have an associated “trusted” userid defined in the RACF® started procedures table (ICHRIN03). This will permit the IOSAS address space to issue commands to the SYSIOSRS extended console. For more information, see z/OS Security Server RACF Security Administrator's Guide

Also, do not use console names that might be confused with device numbers. For example, the following name is not a good choice:

NAME(BAD)

For information on the system console and naming restrictions, see Naming the system console.