When submitting a new callback task, a warning message and list of existing callback tasks may appear. This happens if the system finds any callback tasks for the same target and service already scheduled.
In this case Supervisor has the following options:
- "Submit" button: A new callback task will be created anyways.
- "Cancel" button: A new callback task will not be created.
- Select tasks from the list and press "Submit" button: A new callback task will be created and any selected tasks will be removed (replaced with the new one).