Hi Ram ,
Please check the subschema XT00, DAYPAR function. Also check the IT0007 daily work schedule for your employee.
Check the all grouping for the below tables.
T551C, T508A, T555E, T555Z, T510S, V_551C_B
maintain the T551c table . Check the DWS and pws groupings in work schedule rule.
Check the TMSTA value in Info type 0007 ,
Thanks
Siva