• Estimated Duration: This is the original estimated or planned service duration. Original estimation may be derived from parameters such as past history, and MTTS rules.

• Job Duration Management (JDM): JDM tracks various aspects of service duration, including original estimate, scheduled duration, unscheduled duration, and revisions to duration due to service scope change or estimate variance.

• Long Job Scheduling (LJS): LJS enables auto-creation of multiple events for long jobs that span multiple days for single or multiple technicians. These events are created while respecting configurable constraints such as technicians’ working hours, machine access hours, minimum event duration, and avoidance of overlaps with existing events on the technicians’ calendars.

• Scheduled Duration: This is the total of all the scheduled service duration for the work order. This is the sum of service duration from all the events for the work order.

• Scope Change: This is the supplemental service duration to the original estimated duration. This is due to scope change from the original estimation. Scope change along with variance is added to the original estimated duration to get the revised duration.

• Unscheduled Duration: This is the duration still unscheduled.

• Variance: This is the supplemental service duration to the original estimated service duration, caused by any ongoing changes to the original estimate. This could happen when there is a slippage in executing the tasks or finishing the task quickly than planned. This number can be positive or negative and change is added to the original estimated service duration, along with any change to work order service scope, to get the latest service duration.