When you specify system symbols in commands that flow through several systems in a multisystem environment, the target system almost always substitutes text for the system symbols in the command text. This is true for the main ways to route commands to other systems:

• The CMDSYS keyword in CONSOLxx, which allows operators to enter commands from a console and have the commands automatically routed to another system for processing. The command is first transported to the system that has command association to the system on which the command is entered; then substitution takes place. See Using CMDSYS on the CONSOLE statement for more information.
• A CPF prefix, which allows operators to send commands to a system in a sysplex for which a unique prefix is defined. If a command has a CPF-defined prefix, the command is first transported to the system that has the prefix; then substitution takes place. See Using CMDSYS on the CONSOLE statement for more information.
• The ROUTE command, which allows operators to send commands to other systems for processing. The command is first routed to the other system; then substitution takes place. See Using the ROUTE command for more information.

For example, suppose the following command changes the routing codes for a console on a different system from which the command is entered:

 VARY CN(consname),ROUT=&SYSVAR1.

If the value of &SYSVAR1 is (1,2) on the system where the command was issued, and &SYSVAR1 is (3,4) on the system where the console consname is attached, the result of the system symbol substitution is:

 VARY CN(consname),ROUT=(1,2)