Dear Vinod,
Check following points
1. IT0105 & subtype 0001 is updated there should be user I'd.
2. Check Roles should be assigned properly (ESS roleone user and MSS role should be other user and and in the OM should be relationship should be proper)
3. Check PTARQ leave status , if there status is showing approved then check workflow with ABAPer.
Regard,
Santosh Shivane