Create new tasks and manage orphaned tasks in a deferred session

When you create a new task while working in a deferred session, an orphaned task is created in the database. An orphaned task is a schedule task (or customized sub/type) which exists in the database, but is not associated with the structure of the schedule.

If the deferred session is saved, this task is converted to a regular task (task, summary task, phase task, gate task, or milestone) and integrated with the structure.

Note: Orphaned tasks are only created in rare scenarios. For example, in either a deferred or non-deferred session, if you delete the task and save, but for some reason the task deletion fails, that task is converted to an orphaned task.

• If the deferred session is canceled, orphaned tasks are discarded from the current schedule. To delete them from the database permanently, use the Manage Orphaned Task command from a non-deferred session.
• If the schedule is deleted, all of its orphaned tasks are also deleted.

Procedure (manage orphaned tasks)

1. Choose Schedule→Manage Orphaned Task.

   Teamcenter displays the Manage Orphaned Task dialog box.

2. Click Integrate to put the selected tasks back in the schedule, or click Delete to remove the selected tasks permanently.

Note: Orphaned tasks are still schedule task objects and follow the same rules for delete. If you try to delete an orphaned task that is referenced by a proxy task, Teamcenter displays an error message — the orphaned task cannot be deleted. It remains in the database but does not affect your schedule.