Resubmitting Tasks 
You can postpone a task until a later point in time, or resend it. On this date, the task reappears in your worklist. The task does not appear in your worklist until the resubmission date.
Note
It depends on your task type if the Resubmit function is available to you or not.
In the menu choose the option Resubmit.
You can either enter the resubmission date manually or select it from the calendar.
Note
This date must be in the future.
Confirm the resubmission.
The task appears in the Tasks for Resubmission sub view.
The back-end system must have at least the same technical release (Release 7.0). Older releases do not support the resubmission function.