CONSTANTS cns_exec(4)   TYPE  c       VALUE 'ONLI'.
DATA      td_exclude    TYPE TABLE OF sy-ucomm.

PARAMETER p_1 TYPE lifnr.

AT SELECTION-SCREEN OUTPUT.
  APPEND cns_exec TO td_exclude.
  CALL FUNCTION 'RS_SET_SELSCREEN_STATUS'
    EXPORTING
      p_status  = sy-pfkey
    TABLES
      p_exclude = td_exclude.