Defining a master schedule and proxy tasks

Defining and updating the master schedule

Depending on the complexity of the program, you can break the program down into multiple projects. Likewise, each project may be broken into multiple subprojects. Each of these projects and subprojects might have its own schedule. If the program manager or project manager wants to monitor all the schedules together, IPP&E allows you to generate the master schedule in the external schedule. The master schedule collects the task information from all schedules attached to each project and subproject and creates a new task in the master schedule. If there are updates to the original schedule, the master schedule is automatically updated. The master schedule is supported only for analysis purposes, for example, what if analysis, resource analysis, or risk impact analysis.

Note: Importing the master schedule from the external schedule into Teamcenter is not supported.

You can generate the master schedule by submitting the plan to the IPPE Generate Master Schedule workflow. The workflow communicates internally with the external schedule using Teamcenter Integration Framework and creates the master schedule using the plan ID.

If there are updates to the original schedule in the external schedule, you import the update to Teamcenter and the system updates the master schedule. If the master schedule update fails, you can manually initiate an update by submitting the plan to the IPPE Update Master Schedule workflow. This workflow checks the list of updated schedule properties on the plan and collects the data from that schedule to update the master schedule.

Understanding proxy tasks

If there are dependencies between two work packages in different WBS structures, the system creates a proxy task in the schedule for the work package from the other WBS structure. It picks the dates and duration from that work package. The proxy task is created only if the task information for the work package has dates.