Hi Ankur,
I did some analysis and found SAP Workflow is not used, as I couldn't find any mails in SBWP, no items in SWIA. I've checked these based on history in PR05. It seems POWL is used here. Now the challenge here is how do I trace the workitem which was triggered for manager and then how do I re-trigger it. It would have been easy if standard workflow was used.