Below error received while deactivating tasks/job in AWI.
Release : 12.3.X
Component : AUTOMATION ENGINE
Follow below steps to delete/deactivate the task from process monitoring.
1. Login to AWI
2. Go to process monitoring
3. Select the Job (which you are looking to deactivate)
4. Right click on the job
6. choose cancel recursive and double click.
Selected Job/task will be deactivated in process monitoring tab.