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Schedule Management > Configuring Schedule Manager > Configuring schedules in Schedule Manager

Preventing updates of schedules or tasks in certain states

You can configure which actions are prohibited when schedules or tasks are in a specified state, such as in_progress or complete, within Schedule Manager with the following preferences:

  • SM_PREVENT_DELETE_STATES — Note: The values of this preference take precedence over the value of the SM_ALLOW_INPROCESS_REMOVAL_OF_SUB_SCHEDULE for subschedules.
  • SM_PREVENT_TASK_START_UPDATE_STATES
  • SM_PREVENT_UPDATE_STATES
  • SM_PREVENTION_OVERRIDE

Source: https://docs.sw.siemens.com/en-US/doc/282219420/PL20251212545240207.plm00054/xid454377 · retrieved 2026-07-10