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When calling this service it always sets a value in the task table (column IsUserSet) in the background. This value indicates whether a task is assigned explicitly to someone. In case at least one parameter of this service is specified the value will be 1 in the database; when nothing is defined the value will be 0 (unassigning a task). This value is used for the reevaluation of tasks by the routing algorithm. Please refer to 'Overwrite manual assignments' at the page Routing Algorithms. 

Unassign tasks

To unassign tasks add this service with empty parameters in the flow. Triggering this service (at runtime) will clear the assignee. This might be helpful to let the routing algorithm take control of the task assignments.

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