Hello Arun,
The best solution for SAP UserID live-cycle management is to use the SAP Identity Management product. When the SAP Identity Management solution is implemented it is possible to configure that the employee access to be automatically removed from all SAP systems after his HR record is changed just after his resignation.
See more details here: http://www.sap.com/bin/sapcom/en_us/downloadasset.2009-03-mar-25-10.business-driven-compliant-identity-management-pdf.ht…
Best regards,
Donka Dimitrova