A calendar other than SYSTEM_CALENDAR can be deleted by opening the Systemwalker Operation Manager window, selecting the calendar to be deleted from the Job Selection window, and then selecting Delete in the File menu.
Alternately, after selecting the calendar to be deleted, select Delete from the pop-up menu displayed by right-click the mouse on the calendar name.
Note
SYSTEM_CALENDAR cannot be deleted.
The holiday calendar cannot be deleted if it is used by a job net or the service/application execution function.