Custom search help over standard search help

Question

Hello all,
i made a selection screen with some standard fields and it is shoeing F4 as well, but now problem is that now i want to display customized search help, means wants to add our data in F4, can anyone please help me?
i m doing below code but it is showing nothing, neither standard one nor customized one.
code:
SELECT-OPTIONS: so_mesty FOR edidc-mestyp.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR so_mesty-low.
  PERFORM f4_help.
FORM F4_HELP .
TYPES : BEGIN OF gst_stat,
        ZZVALUE like ZCS_PARAM-ZZVALUE,
        ZZPARADES like zcs_param-ZZPARADES,
  END OF gst_stat.
  data : lt_stat TYPE TABLE OF gst_stat.
CONSTANTS: gc_obj(7) type c value 'MMR0320',
            gc_par(6) type c value 'MTYP*'.
   refresh lt_stat.
  select zzvalue ZZPARADES from ZCS_PARAm into table lt_stat where ZZOBJECT = gc_obj and ZZPARANAME = gc_par.
  if lt_stat[] is not initial.
    CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
      EXPORTING
        RETFIELD        = 'ZZVALUE'
        DYNPPROG        = sy-repid
        DYNPNR          = sy-dynnr
        DYNPROFIELD     = 'SO_MESTY-LOW'
        VALUE_ORG       = 'S'
      TABLES
        VALUE_TAB       = lt_stat
      EXCEPTIONS
        PARAMETER_ERROR = 1
        NO_VALUES_FOUND = 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.
  endif.
ENDFORM.                    " F4_HELP
Regards.

Answer 1

Hi,
You can try doing like:
On At Selection Screen on value-request for Fieldname.
First select the data from your multiple table and populate
one final table then that final internal table needs to be passed
in FM:
For Eg:
AT SELECTION-SCREEN ON VALUE-REQUEST FOR S_CLASCN-LOW.
*F4 help for material classification data
  PERFORM F4_HELP_CLASIFC USING S_CLASCN-LOW.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR S_CLASCN-HIGH.
*F4 help for material classification data
  PERFORM F4_HELP_CLASIFC USING S_CLASCN-HIGH.
*&      Form  F4_HELP_CLASIFC
*       text
*      -->P_S_CLASCN_LOW  text
FORM F4_HELP_CLASIFC  USING    P_S_CLASCN_LOW.
*To fetch the classification data on the sel screen
  SELECT CLINT CLASS FROM KLAH UP TO 500 ROWS
  INTO TABLE IT_KLAH.
  IF SY-SUBRC <> 0 .
    MESSAGE TEXT-006 TYPE 'E'.
  ELSE.
    CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
    EXPORTING
* DDIC_STRUCTURE = ' '
    RETFIELD = 'CLASS'    "Field name on which custom F4 is required
* PVALKEY = ' '
    DYNPPROG = SY-REPID
    DYNPNR = SY-DYNNR
    DYNPROFIELD = 'p_s_clascn_low'
    VALUE_ORG = 'S'
    DISPLAY = ' '
    TABLES
    VALUE_TAB = IT_KLAH.   "Final Internal table
  ENDIF.
ENDFORM.                    " F4_HELP_CLASIFC
Hope it helps
Regards
Mansi