Hello Ramesh,
- Check if the substitution is active for the user. Check transaction SBWP : Settings -> Workflow settings -> Adopt view or check table HRUS_D2 to see if any substitutes are maintained. If substitution is maintained you can advise user to deactivate it to see the workitem
Settings -> Workflow settings -> Deactivate substitute.
- Check if BAdI WF_BWP_SELECT_FILTER is implemented and filtering this approval task.
- Check if there are any authorisation issues for user; check SU53.
Regards
Sandy