1. Add button on gui status
2. Set gui attributes display all pushbotton
path: goto->Attributes->Pushbutton assignment, choose display all
3. In ALV subroutines set_pf_status
FORM set_pf_status USING rt_extab TYPE slis_t_extab.
DATA : ls_extab TYPE LINE OF slis_t_extab.
ls_extab-fcode = '&SV'.
APPEND ls_extab TO rt_extab.
SET PF-STATUS 'UPDATE' EXCLUDING rt_extab.
ENDFORM.
4. Display result.
