When canceling a task in mWo10 Maintenance that was simultaneously accepted by two users, but completed by one user and finalized in IFS, and the other user cancels the task, the task automatically returns to the undefined group pool. If the task is accepted again and actions are performed on the step, the following error is generated: ERRINV: ORA-20105: JtTaskResource.UPDATENOTVALIDTASK: It is not allowed to modify a Resource Demand connected to a Work Task with Finished status.
I believe this is a bug and the task should not be returned to MWO.