DATA ls_return TYPE bapireturn.
CALL FUNCTION 'BAPI_EMPLOYEE_CHECKEXISTENCE'
EXPORTING
number = 99999999
IMPORTING
return = ls_return.
IF ls_return-type = 'E'.
MESSAGE ls_return-message TYPE ls_return-type.
ENDIF.
Tag: pernr
[ABAP] User ↔ Employeenumber
Class:
– CL_HCMFAB_EMPLOYEE_API
Methods:
– GET_USERID_FROM_EMPLOYEENUMBER
– GET_EMPLOYEENUMBER_FROM_USER

How to use the class:
TRY.
DATA(lv_pernr) = cl_hcmfab_employee_api=>get_instance( )->get_employeenumber_from_user( sy-uname ).
CATCH cx_hcmfab_common.
ENDTRY.
TRY.
DATA(lv_uname) = cl_hcmfab_employee_api=>get_instance( )->get_userid_from_employeenumber( lv_pernr ).
CATCH cx_hcmfab_common.
ENDTRY.