You can define system console attributes for problem determination mode in CONSOLxx. In CONSOLxx, you can define routing codes (ROUTCODE), message level (LEVEL), and MONITOR attribute on the CONSOLE statement for the system console.
During regular operations (when the system console in not in problem determination mode), the system ignores CONSOLxx values for message routing to minimize message traffic. (See The system console during normal operations.) When the operator activates problem determination mode for the first time after the IPL, the system uses the CONSOLxx values that you have defined to control problem determination mode for the system console.
If you do not define the system console in CONSOLxx, the system uses CONSOLxx default values to control problem determination mode for the system console. For information on console attribute default values, see z/OS MVS Initialization and Tuning Reference.