Status Transitions of a Dialog Work Item 
The diagram below shows the possible status transitions that a dialog work item (type W) can undergo:

The arrows are labeled with the functions used by a user to trigger the respective status transition.
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For further information, refer to
Status of a Dialog Work Item.Transition from status waiting
The transition from the status waiting to the status ready is performed automatically by the work item manager when the requested start is reached. A workflow system administrator can set a work item to the status ready manually.
Transition from status ready
From this status, the work item passes either to the status reserved or via the status in process to the status completed.
Transition from status reserved
A work item with the status reserved can be reset to the status ready.
Transition to and from status in process
A work item with the status in process can be reset to the status ready. A workflow system administrator can reset a work item manually. This function is available when changing the work item.
Transition from status executed
After confirmation of end of processing, the work item assumes the status completed.
Transition from status completed
Work items with the status completed can no longer be set to another status even if a workflow system administrator intervenes.
Transition from status error
A workflow system administrator can intervene and set work items with errors to the status in process or the status logically deleted (possibly after eliminating the error).
Transition from status logically deleted
Work items with the status logically deleted can no longer be set to another status even if a workflow system administrator intervenes.