Selection validations

Question

hi guru's,
in my selection screen one parameter(companycode) and two select options (vkorg, vtweg ) are there.
i want to validate this fields such as ' once we select company code it should have to give  vkorg data if we press f4 for vkorg related to our selected company code.
  same for vtweg . it should  check relatd vtweg's in company code as well as vkorg.
plz...
send me the code and explaination .
thanks in advance.

Answer 1

Hi,
check the below code.
change your code accordingly..
tables: t001k.
For Identification Number
DATA: BEGIN OF it_bwkey OCCURS 0,
        bwkey LIKE t001k-bwkey,
      END OF it_bwkey.
data: v_bukrs(4).
For Run date
DATA: BEGIN OF it_bukrs OCCURS 0,
        bukrs LIKE t001k-bukrs,
      END OF it_bukrs.
DATA it_ret LIKE ddshretval OCCURS 0 WITH HEADER LINE.
SELECTION-SCREEN: BEGIN OF BLOCK main WITH FRAME TITLE text-001.
SELECTION-SCREEN SKIP.
PARAMETERS:    p_bukrs(4) TYPE c.
SELECT-OPTIONS s_bwkey FOR t001k-bwkey NO INTERVALS.
SELECTION-SCREEN END OF BLOCK main.
Validation Section
INITIALIZATION.
  SELECT DISTINCT bukrs FROM t001k INTO TABLE it_bukrs.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_bukrs.
  CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
    EXPORTING
      retfield        = 'BUKRS'
      dynpprog        = sy-repid
      dynpnr          = sy-dynnr
      dynprofield     = 'P_BUKRS'
      value_org       = 'S'
    TABLES
      value_tab       = it_bukrs
    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.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR s_bwkey-low.
  TABLES: t130r.
  DATA: BEGIN OF dynpfields OCCURS 0. "Hilfsstruktur zum auslesen des
          INCLUDE STRUCTURE dynpread. "Feldwertes vom Dynpro bei >F4<
  DATA: END OF   dynpfields.
  DATA : sy_repid LIKE sy-repid,
         sy_dynnr LIKE sy-dynnr.
  CLEAR dynpfields.
  REFRESH dynpfields.
  dynpfields-fieldname = 'P_BUKRS'.
  APPEND dynpfields.
  Lesen des akt. Wertes von Dynpro
  sy_repid = sy-repid.
  sy_dynnr = sy-dynnr.
  CALL FUNCTION 'DYNP_VALUES_READ'
    EXPORTING
      dyname     = sy_repid
      dynumb     = sy_dynnr
    TABLES
      dynpfields = dynpfields
    EXCEPTIONS
      OTHERS     = 01.
  IF sy-subrc = 0.
    READ TABLE dynpfields WITH KEY fieldname = 'P_BUKRS'.
    IF sy-subrc = 0.
      v_bukrs = dynpfields-fieldvalue.
    ENDIF.
  ENDIF.
  SELECT bwkey FROM t001k
  INTO TABLE it_bwkey
  WHERE bukrs = v_bukrs.
  DELETE ADJACENT DUPLICATES FROM it_bwkey.
  CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
    EXPORTING
      retfield        = 'BWKEY'
      dynpprog        = sy-repid
      dynpnr          = sy-dynnr
      dynprofield     = 'S_BWKEY'
      value_org       = 'S'
    TABLES
      value_tab       = it_bwkey
    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.