Using the T.code SWUE you can re-trigger.
Follow the steps to trigger the workflow via Event.
1) Goto the T.code SWUE.
2) Object category = BO BOR Object Type
3) Object Type = Business Object (e.g. BUS2089,..).
4) Object Event = which event you want to trigger (e.g CREATED,..)
5) Click on Object Key button & enter the key field value(s)
6) There is a button 'Event Parametersu2019. Click on that to enter the event parameter values, if any
7) Then you have to click 'Event Receiver' button, and you can see which Workflow is linked to this event
8) Now click on 'Create Event' to trigger the event.
9) Then Go to SWEL and see the Event.
