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Create blackout and maintenance schedules

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Create blackout and maintenance schedules

To schedule when changes are implemented to CIs, you can create blackout and maintenance schedules.

Before you begin

Role required: admin

The Change Management - Collision Detector (com.snc.change.collision) plugin is activated.

About this task

Blackout schedules are periods of time where changes cannot be implemented. For example, create a blackout schedule for code freezes at the end of the year.

Maintenance schedules restrict changes to being implemented inside a specific period of time. For example, you can create a maintenance schedule implement changes only on the weekend. Maintenance activity is represented by a span, which is displayed as a horizontal bar on the timeline and can appear in any color. Spans for requested changes that occur outside their allowed maintenance periods appear in red on the timeline.

Both blackout and maintenance schedules are condition schedules.


  1. Create the schedule.
    Create a blackout schedule
    1. Navigate to Change > Administration > Blackout Schedules.
    2. Click New.
    Create a maintenance schedule
    1. Navigate to Change > Administration > Maintenance Schedules.
    2. Click New.
    Note: Maintenance schedules added directly to configuration items are not evaluated during conflict detection. A maintenance schedule needs to be defined matching the CI class and conditions defined.
  2. Fill in the fields on the form, as appropriate.
    Table 1. Blackout Schedules form
    Field Description
    Name Enter a name for the schedule.
    Description Enter a description for the schedule.
    Time zone Select the time zone for the schedule.

    To evaluate planned start and end dates on the change request form for logged in users, select Floating.

    Applies to Select the CI classification to which the conflict detection is filtered.
    Condition Select the conditions to specify the CIs to which the schedule applies to.

    This field appears only when a CI is selected from the Applies to list.

    Note: Related fields used in conditions are not evaluated for blackout or maintenance schedules.
  3. Right-click the form header and click Save.
    A blackout or maintenance schedule is created. You will now be able to associate one or more schedule entries with this newly created schedule.

What to do next

Users can now start applying schedules to determine when changes are implemented to CIs.