DESC.CRIT = (descriptor code)

This parameter specifies the descriptor code used for critical write-to-operator (WTO) messages. Messages that go to the critical route code are, for example, disastrous session errors or critical ABENDs. You can specify as many as 16 codes. The default of DESC.CRIT = (2) specifies immediate action is required.

Modifiable through MODIFY INITPARMS command: YES