Create simple business process with start -> User task -> end; In the User task properties click on Reassignments field and add: Select one user from the drop down Users list; Type = Not Completed; Period = 1 minute Set the Actor to the current user; Save the changes and deploy this process; Start the process; Navigate to the Task Inbox and there should be Task in the Reserved status for 1 minute; After 1 minute, this task should not be visible any more - so log out and log in to the Business Central using another user (that was configured in the step 2); Navigate to the Task Inbox and confirm that the task is there; Select "Claim and Work" from the available actions; Actual result The error message is shown: Unable to complete your request. The following exception occurred: "Unexpected error during processing: Organizational entity already exists with [UserImpl:'test'] id, please check that there is no group and user with same id ". Expected result No error messages are shown. It is possible to claim the task.