REFRESH LAYOUT

FORM set_layout .
  DATA:
    ltd_select     TYPE TABLE OF rsparams.

  CLEAR:td_alv2.
  CLEAR ltd_select.
  REFRESH ltd_select.
  CALL FUNCTION 'RS_REFRESH_FROM_SELECTOPTIONS'
    EXPORTING
      curr_report     = sy-repid
    TABLES
      selection_table = ltd_select
    EXCEPTIONS
      not_found       = 1
      no_report       = 2
      OTHERS          = 3.
  IF sy-subrc <> 0.
    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  ENDIF.
  SUBMIT (sy-repid) VIA SELECTION-SCREEN
        WITH SELECTION-TABLE ltd_select.

ENDFORM.