You might check the following tables:
T500C (or T-code OE00)
T500L
T500L_CUST
V_T520M
V_CURC
T001P
and currency link to your Company Code: V_T001.
Of course please check master data. You can try with new employee which maintained master data correctly.
Hope it helps.
Best Regards,
Woody (Trong Minh)