The documentation portal is undergoing maintenance. During this period, you can't create any new user credentials. If you do, you'll need to recreate the user credential after the maintenance period ends.
The Advanced tab for a Human task includes the task recovery strategy.
A Human task specifies a restart recovery strategy. The restart option is read-only. The Data Integration Service always restarts an interrupted Human task when a workflow recovers.
If the workflow is not enabled for recovery, the Data Integration Service ignores the task recovery strategy.