How to add F1 help for a field

hello.
could you plese send me a small program , add F1 help for a field ,
it's very urgent !
best regards
srinivas

data: it_ret like ddshretval occurs 0 with header line,
         IT_MSEG_TEMP LIKE IT_MSEG OCCURS 0 WITH HEADER LINE.
At selection-screen on value-request for s_mat-low.
Select MBLNR from mkpf into table it_mblnr.
CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
    EXPORTING
DDIC_STRUCTURE         = ' '
      RETFIELD               = 'MBLNR'
PVALKEY                = ' '
DYNPPROG               = ' '
DYNPNR                 = ' '
DYNPROFIELD            = ' '
STEPL                  = 0
WINDOW_TITLE           =
VALUE                  = ' '
     VALUE_ORG              = 'S'
MULTIPLE_CHOICE        = ' '
DISPLAY                = ' '
CALLBACK_PROGRAM       = ' '
CALLBACK_FORM          = ' '
MARK_TAB               =
IMPORTING
USER_RESET             =
    TABLES
      VALUE_TAB              = IT_MBLNR
FIELD_TAB              =
     RETURN_TAB             = IT_RET
DYNPFLD_MAPPING        =
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.
IF SY-SUBRC = 0.
    read table it_ret index 1.
    move it_ret-fieldval to S_mat-low.
ENDIF.
At selection-screen on value-request for s_mat-high.
Select MBLNR from mkpf into table it_mblnr.
CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
    EXPORTING
DDIC_STRUCTURE         = ' '
      RETFIELD               = 'MBLNR'
PVALKEY                = ' '
DYNPPROG               = ' '
DYNPNR                 = ' '
DYNPROFIELD            = ' '
STEPL                  = 0
WINDOW_TITLE           =
VALUE                  = ' '
     VALUE_ORG              = 'S'
MULTIPLE_CHOICE        = ' '
DISPLAY                = ' '
CALLBACK_PROGRAM       = ' '
CALLBACK_FORM          = ' '
MARK_TAB               =
IMPORTING
USER_RESET             =
    TABLES
      VALUE_TAB              = IT_MBLNR
FIELD_TAB              =
     RETURN_TAB             = IT_RET
DYNPFLD_MAPPING        =
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.
IF SY-SUBRC = 0.
    read table it_ret index 1.
    move it_ret-fieldval to S_mat-high.
ENDIF.

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Check the sample code:
*& Include           ZSRO_MPRN_SEARCH                                 *
MODULE PSTLZ_F4 INPUT
MODULE pstlz_f4 INPUT.
reading post code
DATA: stepl TYPE systepl,
        stepl_index TYPE systepl.
CLEAR: stepl, stepl_index.
CLEAR:   lt_returntab,lt_dynpfields,i_mprn1.
REFRESH: lt_returntab,lt_dynpfields,i_mprn1.
lt_dynpfields-fieldname = 'I_MPRN-POST_CODE'.
lt_dynpfields-stepl     = stepl.
APPEND lt_dynpfields. CLEAR lt_dynpfields.
CALL FUNCTION 'DYNP_VALUES_READ'
    EXPORTING
      dyname               = sy-repid
      dynumb               = sy-dynnr
      translate_to_upper   = c_x
      determine_loop_index = c_x
    TABLES
      dynpfields           = lt_dynpfields
    EXCEPTIONS
      invalid_abapworkarea = 1
      invalid_dynprofield = 2
      invalid_dynproname   = 3
      invalid_dynpronummer = 4
      invalid_request      = 5
      no_fielddescription = 6
      invalid_parameter    = 7
      undefind_error       = 8
      double_conversion    = 9
      stepl_not_found      = 10
      OTHERS               = 11.
IF sy-subrc EQ 0.
    READ TABLE lt_dynpfields INDEX 1.
ENDIF.
ws_outcode = lt_dynpfields-fieldvalue.
stepl_index = lt_dynpfields-stepl.
REPLACE '*' WITH ' ' INTO lt_dynpfields-fieldvalue.
IF NOT lt_dynpfields-fieldvalue IS INITIAL.
    MOVE lt_dynpfields-fieldvalue TO ws_outcode.
    ws_len = STRLEN( lt_dynpfields-fieldvalue ).
    IF ws_len GE 7.
      ws_len = ws_len - 3.
     ws_icode = ws_code+ws_len(3).
      lt_dynpfields-fieldvalue = lt_dynpfields-fieldvalue+0(ws_len).
      CONCATENATE lt_dynpfields-fieldvalue '%'
          INTO ws_outcode.
      CONDENSE lt_dynpfields-fieldvalue.
   REPLACE ws_icode WITH ' ' INTO lt_dynpfields-fieldvalue.
    ELSE.
      CONCATENATE lt_dynpfields-fieldvalue+0(4) '%'
        INTO ws_outcode.
    ENDIF.
   ws_ocode = ws_code+0(3).
ENDIF.
reading MPRN
CLEAR:   lt_returntab,lt_dnpfields,i_mprn1.
REFRESH: lt_returntab,lt_dnpfields,i_mprn1.
lt_dnpfields-fieldname = 'I_MPRN-MPRN'.
lt_dnpfields-stepl     = stepl_index.
APPEND lt_dnpfields. CLEAR lt_dnpfields.
CALL FUNCTION 'DYNP_VALUES_READ'
    EXPORTING
      dyname               = sy-repid
      dynumb               = sy-dynnr
      translate_to_upper   = 'X'
    TABLES
      dynpfields           = lt_dnpfields
    EXCEPTIONS
      invalid_abapworkarea = 1
      invalid_dynprofield = 2
      invalid_dynproname   = 3
      invalid_dynpronummer = 4
      invalid_request      = 5
      no_fielddescription = 6
      invalid_parameter    = 7
      undefind_error       = 8
      double_conversion    = 9
      stepl_not_found      = 10
      OTHERS               = 11.
IF sy-subrc EQ 0.
    READ TABLE lt_dnpfields INDEX 1.
ENDIF.
MPRN blank and Post code exist
IF lt_dnpfields-fieldvalue IS INITIAL.
    IF NOT lt_dynpfields-fieldvalue IS INITIAL.
      SELECT mprn ser_num sub_bud bud_name del_pt_alias
             bud_num dep_street prin_street dbl_dep_street
             dep_locty post_town county outcode incode
             lg_site_ind file_date FROM zspa_mprn INTO
             CORRESPONDING FIELDS OF TABLE i_mprn1
             WHERE outcode LIKE ws_outcode.
    ELSE.
MPRN blank and Post code blank
      SELECT mprn ser_num sub_bud bud_name del_pt_alias
             bud_num dep_street prin_street dbl_dep_street
             dep_locty post_town county outcode incode
             lg_site_ind file_date FROM zspa_mprn INTO
             CORRESPONDING FIELDS OF TABLE i_mprn1.
    ENDIF.
ELSE.
MPRN exist and Post code exist
    IF NOT lt_dynpfields-fieldvalue IS INITIAL.
      SELECT mprn ser_num sub_bud bud_name del_pt_alias
             bud_num dep_street prin_street dbl_dep_street
             dep_locty post_town county outcode incode
             lg_site_ind file_date FROM zspa_mprn INTO
             CORRESPONDING FIELDS OF TABLE i_mprn1
             WHERE outcode LIKE ws_outcode AND
                   mprn EQ lt_dnpfields-fieldvalue.
    ELSE.
MPRN exist and Post code blank
      SELECT mprn ser_num sub_bud bud_name del_pt_alias
             bud_num dep_street prin_street dbl_dep_street
             dep_locty post_town county outcode incode
             lg_site_ind file_date FROM zspa_mprn INTO
             CORRESPONDING FIELDS OF TABLE i_mprn1
             WHERE mprn EQ lt_dnpfields-fieldvalue.
    ENDIF.
ENDIF.
CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
    EXPORTING
      retfield        = 'MPRN'
      dynpprog        = sy-repid
      dynpnr          = sy-dynnr
      window_title    = 'Select MPRN'
      value_org       = 'S'
    TABLES
      value_tab       = i_mprn1 "lt_mprn
      return_tab      = lt_returntab
    EXCEPTIONS
      parameter_error = 1
      no_values_found = 2
      OTHERS          = 3.
IF sy-subrc EQ 0.
    READ TABLE lt_returntab INDEX 1.
    READ TABLE i_mprn1 WITH KEY mprn = lt_returntab-fieldval.
    IF sy-subrc EQ 0.
Updating post code
      CONCATENATE i_mprn1-outcode i_mprn1-incode
                    INTO ws_postcode
                         SEPARATED BY space.
      MOVE ws_postcode TO i_mprn-post_code.
      CLEAR   : i_dnpfld,
                ws_dynpfld.
      REFRESH : i_dnpfld.
      ws_dyname   = 'ZSRO_MASTER_DATA'.
      ws_dynumb   = '0301'.
      ws_dynpfld-fieldname ='I_MPRN-POST_CODE'.
      ws_dynpfld-fieldvalue = ws_postcode .
      ws_dynpfld-stepl      = stepl_index.
      APPEND ws_dynpfld TO i_dnpfld.
      CALL FUNCTION 'DYNP_VALUES_UPDATE'
        EXPORTING
          dyname               = ws_dyname
          dynumb               = ws_dynumb
        TABLES
          dynpfields           = i_dnpfld
        EXCEPTIONS
          invalid_abapworkarea = 1
          invalid_dynprofield = 2
          invalid_dynproname   = 3
          invalid_dynpronummer = 4
          invalid_request      = 5
          no_fielddescription = 6
          undefind_error       = 7
          OTHERS               = 8.
      IF sy-subrc <> 0.
      ENDIF.
Updating MPRN
      MOVE i_mprn1-mprn TO i_mprn-mprn.
      CLEAR   : i_dnpfld,
                ws_dynpfld.
      REFRESH : i_dnpfld.
      ws_dyname   = 'ZSRO_MASTER_DATA'.
      ws_dynumb   = '0301'.
      ws_dynpfld-fieldname ='I_MPRN-MPRN'.
      ws_dynpfld-fieldvalue = i_mprn1-mprn .
      ws_dynpfld-stepl      = stepl_index.
      APPEND ws_dynpfld TO i_dnpfld.
      CALL FUNCTION 'DYNP_VALUES_UPDATE'
        EXPORTING
          dyname               = ws_dyname
          dynumb               = ws_dynumb
        TABLES
          dynpfields           = i_dnpfld
        EXCEPTIONS
          invalid_abapworkarea = 1
          invalid_dynprofield = 2
          invalid_dynproname   = 3
          invalid_dynpronummer = 4
          invalid_request      = 5
          no_fielddescription = 6
          undefind_error       = 7
          OTHERS               = 8.
      IF sy-subrc <> 0.
      ENDIF.
    ENDIF.
ELSEIF sy-subrc EQ 2.
    MESSAGE s005(zspa) WITH ws_postcode .
ENDIF.
ENDMODULE.                    "PSTLZ_F4 INPUT
MODULE MPRN_F4 INPUT
MODULE mprn_f4 INPUT.
reading post code
DATA: stepl TYPE systepl,
       stepl_index TYPE systepl.
CLEAR: stepl, stepl_index.
CLEAR:   lt_returntab,lt_dynpfields,i_mprn1.
REFRESH: lt_returntab,lt_dynpfields,i_mprn1.
lt_dynpfields-fieldname = 'I_MPRN-POST_CODE'.
lt_dynpfields-stepl     = stepl.
APPEND lt_dynpfields. CLEAR lt_dynpfields.
CALL FUNCTION 'DYNP_VALUES_READ'
    EXPORTING
      dyname               = sy-repid
      dynumb               = sy-dynnr
      translate_to_upper   = c_x
      determine_loop_index = c_x
    TABLES
      dynpfields           = lt_dynpfields
    EXCEPTIONS
      invalid_abapworkarea = 1
      invalid_dynprofield = 2
      invalid_dynproname   = 3
      invalid_dynpronummer = 4
      invalid_request      = 5
      no_fielddescription = 6
      invalid_parameter    = 7
      undefind_error       = 8
      double_conversion    = 9
      stepl_not_found      = 10
      OTHERS               = 11.
IF sy-subrc EQ 0.
    READ TABLE lt_dynpfields INDEX 1.
ENDIF.
ws_outcode = lt_dynpfields-fieldvalue.
stepl_index = lt_dynpfields-stepl.
REPLACE '*' WITH ' ' INTO lt_dynpfields-fieldvalue.
IF NOT lt_dynpfields-fieldvalue IS INITIAL.
    MOVE lt_dynpfields-fieldvalue TO ws_outcode.
    ws_len = STRLEN( lt_dynpfields-fieldvalue ).
    IF ws_len GE 7.
      ws_len = ws_len - 3.
     ws_icode = ws_code+ws_len(3).
      lt_dynpfields-fieldvalue = lt_dynpfields-fieldvalue+0(ws_len).
      CONCATENATE lt_dynpfields-fieldvalue '%'
          INTO ws_outcode.
      CONDENSE lt_dynpfields-fieldvalue.
   REPLACE ws_icode WITH ' ' INTO lt_dynpfields-fieldvalue.
    ELSE.
      CONCATENATE lt_dynpfields-fieldvalue+0(4) '%'
        INTO ws_outcode.
    ENDIF.
   ws_ocode = ws_code+0(3).
ENDIF.
reading MPRN
CLEAR:   lt_returntab,lt_dnpfields,i_mprn1.
REFRESH: lt_returntab,lt_dnpfields,i_mprn1.
lt_dnpfields-fieldname = 'I_MPRN-MPRN'.
lt_dnpfields-stepl     = stepl_index.
APPEND lt_dnpfields. CLEAR lt_dnpfields.
CALL FUNCTION 'DYNP_VALUES_READ'
    EXPORTING
      dyname               = sy-repid
      dynumb               = sy-dynnr
      translate_to_upper   = 'X'
    TABLES
      dynpfields           = lt_dnpfields
    EXCEPTIONS
      invalid_abapworkarea = 1
      invalid_dynprofield = 2
      invalid_dynproname   = 3
      invalid_dynpronummer = 4
      invalid_request      = 5
      no_fielddescription = 6
      invalid_parameter    = 7
      undefind_error       = 8
      double_conversion    = 9
      stepl_not_found      = 10
      OTHERS               = 11.
IF sy-subrc EQ 0.
    READ TABLE lt_dnpfields INDEX 1.
ENDIF.
MPRN blank and Post code exist
IF lt_dnpfields-fieldvalue IS INITIAL.
    IF NOT lt_dynpfields-fieldvalue IS INITIAL.
      SELECT mprn ser_num sub_bud bud_name del_pt_alias
             bud_num dep_street prin_street dbl_dep_street
             dep_locty post_town county outcode incode
             lg_site_ind file_date FROM zspa_mprn INTO
             CORRESPONDING FIELDS OF TABLE i_mprn1
             WHERE outcode LIKE ws_outcode.
    ELSE.
MPRN blank and Post code blank
      SELECT mprn ser_num sub_bud bud_name del_pt_alias
             bud_num dep_street prin_street dbl_dep_street
             dep_locty post_town county outcode incode
             lg_site_ind file_date FROM zspa_mprn INTO
             CORRESPONDING FIELDS OF TABLE i_mprn1.
    ENDIF.
ELSE.
MPRN exist and Post code exist
    IF NOT lt_dynpfields-fieldvalue IS INITIAL.
      SELECT mprn ser_num sub_bud bud_name del_pt_alias
             bud_num dep_street prin_street dbl_dep_street
             dep_locty post_town county outcode incode
             lg_site_ind file_date FROM zspa_mprn INTO
             CORRESPONDING FIELDS OF TABLE i_mprn1
             WHERE outcode LIKE ws_outcode AND
                   mprn EQ lt_dnpfields-fieldvalue.
    ELSE.
MPRN exist and Post code blank
      SELECT mprn ser_num sub_bud bud_name del_pt_alias
             bud_num dep_street prin_street dbl_dep_street
             dep_locty post_town county outcode incode
             lg_site_ind file_date FROM zspa_mprn INTO
             CORRESPONDING FIELDS OF TABLE i_mprn1
             WHERE mprn EQ lt_dnpfields-fieldvalue.
    ENDIF.
ENDIF.
CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
    EXPORTING
      retfield        = 'MPRN'
      dynpprog        = sy-repid
      dynpnr          = sy-dynnr
      window_title    = 'Select MPRN'
      value_org       = 'S'
    TABLES
      value_tab       = i_mprn1 "lt_mprn
      return_tab      = lt_returntab
    EXCEPTIONS
      parameter_error = 1
      no_values_found = 2
      OTHERS          = 3.
IF sy-subrc EQ 0.
    READ TABLE lt_returntab INDEX 1.
    READ TABLE i_mprn1 WITH KEY mprn = lt_returntab-fieldval.
    IF sy-subrc EQ 0.
Updating MPRN
      MOVE i_mprn1-mprn TO i_mprn-mprn.
      CLEAR   : i_dnpfld,
                ws_dynpfld.
      REFRESH : i_dnpfld.
      ws_dyname   = 'ZSRO_MASTER_DATA'.
      ws_dynumb   = '0301'.
      ws_dynpfld-fieldname ='I_MPRN-MPRN'.
      ws_dynpfld-fieldvalue = i_mprn1-mprn .
      ws_dynpfld-stepl      = stepl_index.
      APPEND ws_dynpfld TO i_dnpfld.
**code changed by laxman 10.08.2005
     ws_dynpfld-stepl = mprn-current_line.
**code changed by laxman 10.08.2005
      CALL FUNCTION 'DYNP_VALUES_UPDATE'
        EXPORTING
          dyname               = ws_dyname
          dynumb               = ws_dynumb
        TABLES
          dynpfields           = i_dnpfld
        EXCEPTIONS
          invalid_abapworkarea = 1
          invalid_dynprofield = 2
          invalid_dynproname   = 3
          invalid_dynpronummer = 4
          invalid_request      = 5
          no_fielddescription = 6
          undefind_error       = 7
          OTHERS               = 8.
      IF sy-subrc <> 0.
      ENDIF.
Updating post code
      CONCATENATE i_mprn1-outcode i_mprn1-incode
                    INTO ws_postcode
                         SEPARATED BY space.
      MOVE ws_postcode TO i_mprn-post_code.
      CLEAR   : i_dnpfld,
                ws_dynpfld.
      REFRESH : i_dnpfld.
      ws_dyname   = 'ZSRO_MASTER_DATA'.
      ws_dynumb   = '0301'.
      ws_dynpfld-fieldname ='I_MPRN-POST_CODE'.
      ws_dynpfld-fieldvalue = ws_postcode .
      ws_dynpfld-stepl      = stepl_index.
      APPEND ws_dynpfld TO i_dnpfld.
**code changed by laxman 10.08.2005
     break gblap0.
     ws_dynpfld-stepl = mprn-current_line.
     LOOP AT i_mprn.
       MOVE i_mprn1-mprn TO i_mprn-mprn.
       MOVE ws_postcode TO i_mprn-post_code.
       MODIFY i_mprn INDEX
                mprn-current_line." transporting MPRN POST_CODE.
     ENDLOOP.
**code changed by laxman 10.08.2005
      CALL FUNCTION 'DYNP_VALUES_UPDATE'
        EXPORTING
          dyname               = ws_dyname
          dynumb               = ws_dynumb
        TABLES
          dynpfields           = i_dnpfld
        EXCEPTIONS
          invalid_abapworkarea = 1
          invalid_dynprofield = 2
          invalid_dynproname   = 3
          invalid_dynpronummer = 4
          invalid_request      = 5
          no_fielddescription = 6
          undefind_error       = 7
          OTHERS               = 8.
      IF sy-subrc <> 0.
      ENDIF.
    ENDIF.
ELSEIF sy-subrc EQ 2.
    MESSAGE s006(zspa) WITH i_mprn1-mprn .
ENDIF.
ENDMODULE.                    "MPRN_F4 INPUT
MODULE GNTC_F4 INPUT
MODULE gntc_f4 INPUT.
DATA: BEGIN OF lt_gntc OCCURS 0,
          gntc LIKE iflot-zzgntc,
        END OF lt_gntc.
CLEAR:   lt_returntab, lt_gntc.
REFRESH: lt_returntab, lt_gntc.
lt_gntc-gntc = 'DM'.
APPEND lt_gntc. CLEAR lt_gntc.
lt_gntc-gntc = 'NDM'.
APPEND lt_gntc. CLEAR lt_gntc.
CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
    EXPORTING
      retfield        = 'ZZGNTC'
      dynpprog        = sy-repid
      dynpnr          = sy-dynnr
      window_title    = 'Select Gas Nomination Type Code'
      value_org       = 'S'
    TABLES
      value_tab       = lt_gntc
      return_tab      = lt_returntab
    EXCEPTIONS
      parameter_error = 1
      no_values_found = 2
      OTHERS          = 3.
IF sy-subrc EQ 0.
    READ TABLE lt_returntab INDEX 1.
    i_mprn-dm_ndm = lt_returntab-fieldval.
ENDIF.
ENDMODULE.                    "GNTC_F4 INPUT
*&      Module mprn1_f4 INPUT
      text
MODULE mprn1_f4 INPUT.
DATA: lt_f4          TYPE ddshretval OCCURS 0 WITH HEADER LINE,
        lt_returntab1 LIKE ddshretval OCCURS 0 WITH HEADER LINE,
        lt_dynpfields1 LIKE dynpread OCCURS 0 WITH HEADER LINE,
        lt_dnpfields1 LIKE dynpread OCCURS 0 WITH HEADER LINE.
DATA: stepl1 TYPE systepl,
        stepl_index1 TYPE systepl.
DATA : i_dnpfld1      LIKE dynpread OCCURS 0 WITH HEADER LINE,
         ws_dyname1     LIKE d020s-prog,
         ws_dynumb1     LIKE d020s-dnum,
         ws_dynpfld1    LIKE dynpread.
CLEAR: i_dnpfld1, ws_dyname1, ws_dynumb1, ws_dynpfld1,
         lt_f4, lt_returntab1,lt_dynpfields1, lt_f4,
         stepl1, stepl_index1.
REFRESH: i_dnpfld1, lt_returntab1,lt_dynpfields1, lt_f4.
To Determine Steploop Index
lt_dynpfields1-fieldname = 'I_MPRN-POST_CODE'.
lt_dynpfields1-stepl     = stepl1.
APPEND lt_dynpfields1. CLEAR lt_dynpfields1.
CALL FUNCTION 'DYNP_VALUES_READ'
    EXPORTING
      dyname               = sy-repid
      dynumb               = sy-dynnr
      translate_to_upper   = 'X'
      determine_loop_index = 'X'
    TABLES
      dynpfields           = lt_dynpfields1
    EXCEPTIONS
      invalid_abapworkarea = 1
      invalid_dynprofield = 2
      invalid_dynproname   = 3
      invalid_dynpronummer = 4
      invalid_request      = 5
      no_fielddescription = 6
      invalid_parameter    = 7
      undefind_error       = 8
      double_conversion    = 9
      stepl_not_found      = 10
      OTHERS               = 11.
IF sy-subrc EQ 0.
    READ TABLE lt_dynpfields1 INDEX 1.
ENDIF.
stepl_index1 = lt_dynpfields1-stepl.
CALL FUNCTION 'F4IF_FIELD_VALUE_REQUEST'
    EXPORTING
      tabname           = 'IFLOT'
      fieldname         = 'I_MPRN-MPRN'
      searchhelp        = 'ZS_MPRN_PC'
      dynpprog          = sy-repid
      dynpnr            = sy-dynnr
    TABLES
      return_tab        = lt_f4
    EXCEPTIONS
      field_not_found   = 1
      no_help_for_field = 2
      inconsistent_help = 3
      no_values_found   = 4
      OTHERS            = 5.
IF sy-subrc <> 0.
    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
    WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
ENDIF.
Update tablecontrol
READ TABLE lt_f4 WITH KEY fieldname = 'MPRN'.
IF sy-subrc = 0.
    MOVE lt_f4-fieldval TO i_mprn-mprn.
    ws_dyname1   = 'ZSRO_MASTER_DATA'.
    ws_dynumb1   = '0301'.
    ws_dynpfld1-fieldname ='I_MPRN-MPRN'.
    ws_dynpfld1-fieldvalue = i_mprn-mprn.
    ws_dynpfld1-stepl      = stepl_index1.
    APPEND ws_dynpfld1 TO i_dnpfld1.
    CALL FUNCTION 'DYNP_VALUES_UPDATE'
      EXPORTING
        dyname               = ws_dyname1
        dynumb               = ws_dynumb1
      TABLES
        dynpfields           = i_dnpfld1
      EXCEPTIONS
        invalid_abapworkarea = 1
        invalid_dynprofield = 2
        invalid_dynproname   = 3
        invalid_dynpronummer = 4
        invalid_request      = 5
        no_fielddescription = 6
        undefind_error       = 7
        OTHERS               = 8.
    IF sy-subrc <> 0.
    ENDIF.
ENDIF.
CLEAR : i_dnpfld1, ws_dynpfld1.
REFRESH: i_dnpfld1.
READ TABLE lt_f4 WITH KEY fieldname = 'ZZPSTLZ'.
IF sy-subrc = 0.
    MOVE lt_f4-fieldval TO i_mprn-post_code.
    ws_dyname1   = 'ZSRO_MASTER_DATA'.
    ws_dynumb1   = '0301'.
    ws_dynpfld1-fieldname ='I_MPRN-POST_CODE'.
    ws_dynpfld1-fieldvalue = i_mprn-post_code.
    ws_dynpfld1-stepl      = stepl_index1.
    APPEND ws_dynpfld1 TO i_dnpfld1.
    CALL FUNCTION 'DYNP_VALUES_UPDATE'
      EXPORTING
        dyname               = ws_dyname1
        dynumb               = ws_dynumb1
      TABLES
        dynpfields           = i_dnpfld1
      EXCEPTIONS
        invalid_abapworkarea = 1
        invalid_dynprofield = 2
        invalid_dynproname   = 3
        invalid_dynpronummer = 4
        invalid_request      = 5
        no_fielddescription = 6
        undefind_error       = 7
        OTHERS               = 8.
    IF sy-subrc <> 0.
    ENDIF.
ENDIF.
ENDMODULE.                 " mprn1_f4 INPUT
*&      Module pstlz1_f4 INPUT
      text
MODULE pstlz1_f4 INPUT.
CLEAR: i_dnpfld1, ws_dyname1, ws_dynumb1, ws_dynpfld1,
          lt_f4, lt_returntab1,lt_dynpfields1, lt_f4,
          stepl1, stepl_index1.
REFRESH: i_dnpfld1, lt_returntab1,lt_dynpfields1, lt_f4.
To Determine Steploop Index
lt_dynpfields1-fieldname = 'I_MPRN-MPRN'.
lt_dynpfields1-stepl     = stepl1.
APPEND lt_dynpfields1. CLEAR lt_dynpfields1.
CALL FUNCTION 'DYNP_VALUES_READ'
    EXPORTING
      dyname               = sy-repid
      dynumb               = sy-dynnr
      translate_to_upper   = 'X'
      determine_loop_index = 'X'
    TABLES
      dynpfields           = lt_dynpfields1
    EXCEPTIONS
      invalid_abapworkarea = 1
      invalid_dynprofield = 2
      invalid_dynproname   = 3
      invalid_dynpronummer = 4
      invalid_request      = 5
      no_fielddescription = 6
      invalid_parameter    = 7
      undefind_error       = 8
      double_conversion    = 9
      stepl_not_found      = 10
      OTHERS               = 11.
IF sy-subrc EQ 0.
    READ TABLE lt_dynpfields1 INDEX 1.
ENDIF.
stepl_index1 = lt_dynpfields1-stepl.
CALL FUNCTION 'F4IF_FIELD_VALUE_REQUEST'
    EXPORTING
      tabname           = 'IFLOT'
      fieldname         = 'I_MPRN-POST_CODE'
      searchhelp        = 'ZS_MPRN_PC'
      dynpprog          = sy-repid
      dynpnr            = sy-dynnr
    TABLES
      return_tab        = lt_f4
    EXCEPTIONS
      field_not_found   = 1
      no_help_for_field = 2
      inconsistent_help = 3
      no_values_found   = 4
      OTHERS            = 5.
IF sy-subrc <> 0.
    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
    WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
ENDIF.
Update tablecontrol
READ TABLE lt_f4 WITH KEY fieldname = 'ZZPSTLZ'.
IF sy-subrc = 0.
    MOVE lt_f4-fieldval TO i_mprn-post_code.
    ws_dyname1   = 'ZSRO_MASTER_DATA'.
    ws_dynumb1   = '0301'.
    ws_dynpfld1-fieldname ='I_MPRN-POST_CODE'.
    ws_dynpfld1-fieldvalue = i_mprn-post_code.
    ws_dynpfld1-stepl      = stepl_index1.
    APPEND ws_dynpfld1 TO i_dnpfld1.
    CALL FUNCTION 'DYNP_VALUES_UPDATE'
      EXPORTING
        dyname               = ws_dyname1
        dynumb               = ws_dynumb1
      TABLES
        dynpfields           = i_dnpfld1
      EXCEPTIONS
        invalid_abapworkarea = 1
        invalid_dynprofield = 2
        invalid_dynproname   = 3
        invalid_dynpronummer = 4
        invalid_request      = 5
        no_fielddescription = 6
        undefind_error       = 7
        OTHERS               = 8.
    IF sy-subrc <> 0.
    ENDIF.
ENDIF.
CLEAR : i_dnpfld1, ws_dynpfld1.
REFRESH: i_dnpfld1.
READ TABLE lt_f4 WITH KEY fieldname = 'MPRN'.
IF sy-subrc = 0.
    MOVE lt_f4-fieldval TO i_mprn-mprn.
    ws_dyname1   = 'ZSRO_MASTER_DATA'.
    ws_dynumb1   = '0301'.
    ws_dynpfld1-fieldname ='I_MPRN-MPRN'.
    ws_dynpfld1-fieldvalue = i_mprn-mprn.
    ws_dynpfld1-stepl      = stepl_index1.
    APPEND ws_dynpfld1 TO i_dnpfld1.
    CALL FUNCTION 'DYNP_VALUES_UPDATE'
      EXPORTING
        dyname               = ws_dyname1
        dynumb               = ws_dynumb1
      TABLES
        dynpfields           = i_dnpfld1
      EXCEPTIONS
        invalid_abapworkarea = 1
        invalid_dynprofield = 2
        invalid_dynproname   = 3
        invalid_dynpronummer = 4
        invalid_request      = 5
        no_fielddescription = 6
        undefind_error       = 7
        OTHERS               = 8.
    IF sy-subrc <> 0.
    ENDIF.
ENDIF.
ENDMODULE.                 " pstlz1_f4 INPUT
Regards,
Prakash.

How to create Search Help For Ztable fields

Hi all,
Please let me know How to create Search Help in SE11(what are the parameter i should pass)
and How to maintain search help for Ztable fields at DIctionary level (in SE11) and programming level.

hello .
there are two types of search helps .
1. elementary search help .
2. collective serch help
Below are the steps to create elementary search helps :
1 In the initial screen of the ABAP Dictionary, select object class Search help, enter the name of the search help and choose Create.
2.then youget a option elementary or collective search as per you r need .
3.select Elementary search help and choose
4.write explanatory text in the field Short text.
5. in the selection method give the name of the table or a view .
6 . Select the fields that should be used for value selection or in a hit list .
7. then define the attributes of the search help .
8 Select the IMP flag if it is an import parameter. Select the EXP flag if it is an export parameter.
9 .define the dialog type of the search help.
The dialog type tells how the hit list will be displayed in the input help.
10 . save and activate .
plz reward if usefull
Thanks ,
Abhishek .

HOW to ADD F4 help to a field on SCREEN (MODULE POOL)

Hi,
     How to add f4 help to a field in screen ..plz help
Regards,
Saleha

Hi Saleha,
                In order to add F4 help to a field in modeule pool follow these steps:-
1. First go to SE11 and create your own search help( if you dont know how to create a search help please feel free to ask me, it is very easy).
2. Now in your module pool program program go to the layout of your screen.
3. Now when you see the attributes of this field in the Dict tab you will find the field Search Help. Now here you can specify the name of the search help you created in SE11.
There is also another mehtod to create the dynamic search help. eg:- in a posted document data get the Document nos related to that company code.
The sample code is like this:-
First of all declare the module below in the flow logic of your screen then create it in your main program.
You declare the module in the PROCESS ON VALUE-REQUEST.
PROCESS ON VALUE-REQUEST.
FIELD TXT_DOCNO MODULE VALUE_BELNR.
You also need to create an internal table where you wil store results of the select query fired below in the module.
here you will get a F4 help on the filed Document Number(TXT_DOCNO) based on the field Company code (TXT_CODCO)
MODULE VALUE_BELNR INPUT.
progname = sy-repid.
dynnum   = sy-dynnr.
CLEAR: field_value, dynpro_values.
field_value-fieldname = 'TXT_CODCO'.
APPEND field_value TO dynpro_values.
CALL FUNCTION 'F4IF_FIELD_VALUE_REQUEST'
    EXPORTING
      tabname     = 'BKPF'
      fieldname   = 'BUKRS'
      dynpprog    = progname
      dynpnr      = dynnum
      dynprofield = 'TXT_CODCO'.
CALL FUNCTION 'DYNP_VALUES_READ'
       EXPORTING
            dyname             = progname
            dynumb             = dynnum
            translate_to_upper = 'X'
       TABLES
            dynpfields         = dynpro_values.
READ TABLE dynpro_values INDEX 1 INTO field_value.
SELECT BUKRS BELNR
    FROM BKPF
    INTO CORRESPONDING FIELDS OF TABLE it_doc1
    WHERE BUKRS = field_value-fieldvalue.
CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
       EXPORTING
            retfield    = 'BELNR'
            dynpprog    = progname
            dynpnr      = dynnum
            dynprofield = 'TXT_BELNR'
            value_org   = 'S'
       TABLES
            value_tab   = it_doc1.
ENDMODULE.                 " VALUE_BELNR INPUT
Hope you find this information useful, let me know.
Regards,
Aditya.

How to add F4 help for the custom field of a custom table

Hi All,
How to add F4 help to the custom table field? in the table maintainance when user clicks on F4 i want to provide possible values for this field I am trying to write the code in the screen of table maintainace like the following
PROCESS ON VALUE-REQUEST.
FIELD ZTEST_MAH_F4-KUNNR MODULE zVALUE_kunnr .
But when i am double clicking on module it's giving options to create include program but after that it's giving user is currently editing the table i am not getting this can some body clarify my doubt it's gr8 if some body give some examp code
Thanks&Regards
mahesh

Hi,
Create a subroutine under the event and call the following FM
1. Select all the related data into an itab, for ex i_kunnr
2.    CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
      EXPORTING
    DDIC_STRUCTURE         = ' '
       retfield               = 'KUNNR'
    PVALKEY                = ' '
       dynpprog               = sy-repid
       dynpnr                 = '1000'
       dynprofield            = <selection screen field>
    STEPL                  = 0
    WINDOW_TITLE           =
    VALUE                  = ' '
       value_org              = 'S'
    MULTIPLE_CHOICE        = ' '
    DISPLAY                = ' '
    CALLBACK_PROGRAM       = ' '
    CALLBACK_FORM          = ' '
    MARK_TAB               =
IMPORTING
    USER_RESET             =
      TABLES
       value_tab              = <b>i_kunnr</b>
    FIELD_TAB              =
       return_tab             = < return table >
    DYNPFLD_MAPPING        =
     EXCEPTIONS
       parameter_error        = 1
       no_values_found        = 2
       OTHERS                 = 3

How to add search help in Ztable fields and how to make filelad as check bo

Hello Friends,
I have one table named ZAUDIT with 5 fields.
1 . I want to put search help for each field but it shows tht Inactive message.
Sujjest me steps to create search help.
2.. In my table I want to display content as check boxes in my last field.
How to make it?
Points awarded soon.
Regards,
NVM

Hi,
steps to create search help:
Step1 : Go to Se11 and Select Search Help and Enter One Name and Click Create
Step2 : Enter your Table name in 'Selection Method' Field.
Step3 : Enter the field Name and tick the Flags Imp and Exp and Type 1 and 2 in Lpos,
Spos fields.
Step4 : Save and activate it.
Goto the table, select the field which u want search help and press button search help, give the search help name which u created.
To add check box for particular field,
make use of data element <b>check_box</b>

How to provide F4 help for a field in table control

Hi Friends,
I have requirement like below.
1.Create one custom transaction code with header and item information.
2.In item level, we will be designed table control to enter/display the data.
3.Table controls first field will be material number and next DOT number (Material may have many DOT numbers) and so on.
4.First user will enter material number in the table controls first rows first field and go to DOT number field.
5.DOT number has drop down option. If user selects drop down box of DOT number, he gets all the DOT numbers available in database. User selects one DOT number and double clicks on it then it will be populated in DOT number field box.
But for point number 5, business wants like when ever user enters material number in table control first field then select DOT numbers drop down then they want to see the particular materials DOT numbers only in the drop down list for selection. Not all DOT numbers available in data base. Same thing should happen for all item lines in table control.
Please see below example.
Assume data base table has 10 DOT numbers. But material number has only 2 DOT numbers. When ever user enters material number in item level table control and selects DOT numbers drop down then it should show only 2 DOT numbers which are related to particular material number. Not all 10 DOT numbers.
Could you please suggest me, how can we achieve this?

Hello,
Check this :-
For POV
Input Help in Dialog Modules
You can call dialog modules in the POV event using the event keyword PROCESS ON VALUE-REQUEST.
PROCESS ON VALUE-REQUEST.
FIELD <f> MODULE <mod>.
After the PROCESS ON VALUE-REQUEST statement, you can only use the MODULE statement together with the FIELD statement. When the user chooses F4 for a field <f>, the system calls the module <mod> belonging to the FIELD <f> statement. If there is more than one FIELD statement for the same field <f>, only the first is executed. The module <mod> is defined in the ABAP program like a normal PAI module. However, the contents of the screen field <f> are not available, since it is not transported by the FIELD statement during the PROCESS ON HELP-REQUEST event. You can now program your own value lists in the module. However, this procedure is only recommended if it really is not possible to use a search help. Defining search helps is much easier than PROCESS ON VALUE-REQUEST, since the system takes over some of the standard operations, such as getting field contents from the screen. It also ensures that the F4 help has a uniform look and feel throughout the system. Furthermore, it means that you do not have to reassign input help to fields on each screen.
Despite the introduction of search helps (and search help exits), there are still cases in which you need to use parts of the standard F4 functions directly. In this case, there are some standard function modules that you can use in the POV event. They support search helps, as well as all other kinds of input help, and are responsible for data transport between the screen and the input help. These all have the prefix F4IF_. The most important are:
F4IF_FIELD_VALUE_REQUEST
Calls the input help of the ABAP Dictionary dynamically. You can pass the component names of a structure or database table of the ABAP Dictionary to the function module in the import parameters TABNAME and FIELDNAME. The function module starts the ABAP Dictionary input help for this component. All of the relevant screen fields are read. If you specify the import parameters DYNPPROG, DYNPNR, and DYNPROFIELD, the users selection is returned to the corresponding field on the screen. If you specify the table parameter RETURN_TAB, the selection is returned into the table instead.
F4IF_INT_TABLE_VALUE_REQUEST
This function module displays a value list that you created in an ABAP program. The value list is passed to the function module as the table parameter VALUE_TAB. If you specify the import parameters DYNPPROG, DYNPNR, and DYNPROFIELD, the users selection is returned to the corresponding field on the screen. If you specify the table parameter RETURN_TAB, the selection is returned into the table instead.
There are also two function modules - DYNP_VALUES_READ and DYNP_VALUES_UPDATE - that can read the values of screen fields and return values to them during the POV event. For further information, refer to the relevant function module documentation.
Input help in dialog modules
REPORT DEMO_DYNPRO_F4_HELP_MODULE.
TYPES: BEGIN OF VALUES,
CARRID TYPE SPFLI-CARRID,
CONNID TYPE SPFLI-CONNID,
END OF VALUES.
DATA: CARRIER(3) TYPE C,
CONNECTION(4) TYPE C.
DATA: PROGNAME LIKE SY-REPID,
DYNNUM LIKE SY-DYNNR,
DYNPRO_VALUES TYPE TABLE OF DYNPREAD,
FIELD_VALUE LIKE LINE OF DYNPRO_VALUES,
VALUES_TAB TYPE TABLE OF VALUES.
CALL SCREEN 100.
MODULE INIT OUTPUT.
PROGNAME = SY-REPID.
DYNNUM = SY-DYNNR.
CLEAR: FIELD_VALUE, DYNPRO_VALUES.
FIELD_VALUE-FIELDNAME = 'CARRIER'.
APPEND FIELD_VALUE TO DYNPRO_VALUES.
ENDMODULE.
MODULE CANCEL INPUT.
LEAVE PROGRAM.
ENDMODULE.
MODULE VALUE_CARRIER INPUT.
CALL FUNCTION 'F4IF_FIELD_VALUE_REQUEST'
EXPORTING
TABNAME = 'DEMOF4HELP'
FIELDNAME = 'CARRIER1'
DYNPPROG = PROGNAME
DYNPNR = DYNNUM
DYNPROFIELD = 'CARRIER'.
ENDMODULE.
MODULE VALUE_CONNECTION INPUT.
CALL FUNCTION 'DYNP_VALUES_READ'
EXPORTING
DYNAME = PROGNAME
DYNUMB = DYNNUM
TRANSLATE_TO_UPPER = 'X'
TABLES
DYNPFIELDS = DYNPRO_VALUES.
READ TABLE DYNPRO_VALUES INDEX 1 INTO FIELD_VALUE.
SELECT CARRID CONNID
FROM SPFLI
INTO CORRESPONDING FIELDS OF TABLE VALUES_TAB
WHERE CARRID = FIELD_VALUE-FIELDVALUE.
CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
EXPORTING
RETFIELD = 'CONNID'
DYNPPROG = PROGNAME
DYNPNR = DYNNUM
DYNPROFIELD = 'CONNECTION'
VALUE_ORG = 'S'
TABLES
VALUE_TAB = VALUES_TAB.
ENDMODULE.
The next screen (statically defined) for screen 100 is itself. It has the following layout:
The input fields have been adopted from the program fields CARRIER and CONNECTION. The pushbutton has the function code CANCEL with function type E.
The screen flow logic is as follows:
PROCESS BEFORE OUTPUT.
MODULE INIT.
PROCESS AFTER INPUT.
MODULE CANCEL AT EXIT-COMMAND.
PROCESS ON VALUE-REQUEST.
FIELD CARRIER MODULE VALUE_CARRIER.
FIELD CONNECTION MODULE VALUE_CONNECTION.
When the user chooses input help for the individual fields, the following is displayed:
For the Airline field, the POV module VALUE_CARRIER is called. The function module F4IF_FIELD_VALUE_REQUEST displays the input help for the component CARRIER1 of the structure DEMOF4HELP from the ABAP Dictionary, namely the search help DEMOF4DE. The users selection is returned to the screen field CARRIER.
For the Flight number field, the POV module VALUE_CONNECTION is called. The function module DYNP_VALUE_READ transports the value of the screen field CARRIER into the program. The program then reads the corresponding values from the database table SPFLI into the internal table VALUES_TAB using a SELECT statement, and passes the internal table to F4IF_INT_TABLE_VALUE_REQUEST. This displays the internal table as input help, and places the users selection into the screen field CONNECTION.
For POH------------
Field Help
There are three ways of displaying field help for screen elements:
Data Element Documentation
If you place a field on the screen in the Screen Painter by copying a ABAP Dictionary field, the corresponding data element documentation from the ABAP Dictionary is automatically displayed when the user chooses field help (as long as the help has not been overridden in the screen flow logic).
For further information about creating data element documentation, refer to data elements.
Data Element Supplement Documentation
If the data element documentation is insufficient, you can expand it by writing a data element supplement
Data element supplement documentation contains the heading Definition, as well as the following others:
Use
Procedure
Examples
Dependencies
To create data element supplement documentation for a screen, choose Goto ® Documentation ® DE supplement doc. from the element list of the screen. A dialog box appears in which the system proposes a number as the identified for the data element supplement. You can then enter help texts for the above headings using the SAPscript editor.
Data element supplement documentation created in this way is program- and screen-specific. Any data element supplement documentation created in the ABAP Dictionary with the same number is overridden by the screen-specific documentation. You can link existing data element supplement documentation created in the ABAP Dictionary with a screen field by using the table THLPF. To do this, crate a new row in THLPF containing the following data: Program name, screen name, field name, and number of the data element supplement documentation.
To display data element supplement documentation, you must code the following screen flow logic in the POH event:
PROCESS ON HELP-REQUEST.
FIELD <f> [MODULE <mod>] WITH <num>.
After PROCESS ON HELP-REQUEST, you can only use FIELD statements. If there is no PROCESS ON HELP-REQUEST keyword in the flow logic of the screen, the data element documentation for the current field, or no help at all is displayed when the user chooses F1. Otherwise, the next FIELD statement containing the current field <f> is executed.
If there is screen-specific data element supplement documentation for the field <f>, you can display it by specifying its number <num>. The number <num> can be a literal or a variable. The variable must be declared and filled in the corresponding ABAP program.
You can fill the variables, for example, by calling the module <mod> before the help is displayed. However, the FIELD statement does not transport the contents of the screen field <f> to the ABAP program in the PROCESS ON HELP-REQUEST event.
For further information about data element supplement documentation, refer to Data Element Supplements.
Calling Help Texts from Dialog Modules
If data element supplement documentation is insufficient for your requirements, or you want to display help for program fields that you have not copied from the ABAP Dictionary, you can call dialog modules in the POH event:
PROCESS ON HELP-REQUEST.
FIELD <f> MODULE <mod>.
After the PROCESS ON HELP-REQUEST statement, you can only use the MODULE statement together with the FIELD statement. When the user chooses F1 for a field <f>, the system calls the module <mod> belonging to the FIELD <f> statement. If there is more than one FIELD statement for the same field <f>, only the first is executed. However, the contents of the screen field <f> are not available in the module <mod>, since it is not transported by the FIELD statement during the PROCESS ON HELP-REQUEST event. The field help should not be dependent on the user input.
The module <mod> is defined in the ABAP program like a normal PAI module. The processing logic of the module must ensure that adequate help is displayed for the field in question. Instead of calling an extra screen with text fields, you should use one of the following function modules to display a suitable SAPscript document:
HELP_OBJECT_SHOW_FOR_FIELD
This function module displays the data element documentation for components of any structure or database table from the ABAP Dictionary. You pass the name of the component and structure or table to the import parameters FIELD and TABLE.
HELP_OBJECT_SHOW
Use this function module to display any SAPscript document. You must pass the document class (for example, TX for general texts, DE for data element documentation) and the name of the document to the import parameters DOKCLASS and DOKNAME. For technical reasons, you must also pass an empty internal table with the line type TLINE to the tables parameter of the function module.
For further information about how to create SAPscript documents, refer to the Documentation of System Objects documentation.
Field help on screens.
REPORT DEMO_DYNPRO_F1_HELP.
DATA: TEXT(30),
VAR(4),
INT TYPE I,
LINKS TYPE TABLE OF TLINE,
FIELD3, FIELD4.
TABLES DEMOF1HELP.
TEXT = TEXT-001.
CALL SCREEN 100.
MODULE CANCEL INPUT.
LEAVE PROGRAM.
ENDMODULE.
MODULE F1_HELP_FIELD2 INPUT.
INT = INT + 1.
CASE INT.
WHEN 1.
VAR = '0100'.
WHEN 2.
VAR = '0200'.
INT = 0.
ENDCASE.
ENDMODULE.
MODULE F1_HELP_FIELD3 INPUT.
CALL FUNCTION 'HELP_OBJECT_SHOW_FOR_FIELD'
EXPORTING
DOKLANGU = SY-LANGU
DOKTITLE = TEXT-002
CALLED_FOR_TAB = 'DEMOF1HELP'
CALLED_FOR_FIELD = 'FIELD1'.
ENDMODULE.
MODULE F1_HELP_FIELD4 INPUT.
CALL FUNCTION 'HELP_OBJECT_SHOW'
EXPORTING
DOKCLASS = 'TX'
DOKLANGU = SY-LANGU
DOKNAME = 'DEMO_FOR_F1_HELP'
DOKTITLE = TEXT-003
TABLES
LINKS = LINKS.
ENDMODULE.
The next screen (statically defined) for screen 100 is 100. It has the following layout:
The screen fields DEMOf1HELP-FIELD1 and DEMOF1HELP-FIELD2 from the ABAP Dictionary and the program fields FIELD3 and FIELD4 are assigned to the input fields. The pushbutton has the function code CANCEL with function type E.
The screen flow logic is as follows:
PROCESS BEFORE OUTPUT.
PROCESS AFTER INPUT.
MODULE CANCEL AT EXIT-COMMAND.
PROCESS ON HELP-REQUEST.
FIELD DEMOF1HELP-FIELD2 MODULE F1_HELP_FIELD2 WITH VAR.
FIELD FIELD3 MODULE F1_HELP_FIELD3.
FIELD FIELD4 MODULE F1_HELP_FIELD4.
The components FIELD1 and FIELD2 of structure DEMOF1HELP both refer to the data element DEMOF1TYPE. This data element is documented, and also has two supplements with numbers 0100 and 0200.
The following field help is displayed:
When the user chooses F1 on the input field for DEMOF1HELP-FIELD1, the data element documentation for DEMOF1TYPE is displayed, since the field does not occur in the PROCESS ON HELP-REQUEST event.
If the user chooses F1 repeatedly for the input field DEMOF1HELP-FIELD2, the data element documentation is displayed, along with the supplement documentation for either 0100 or 0200 alternately. The variable VAR is filled in the dialog module F1_HELP_FIELD2.
When the user chooses F1 on the input field for FIELD3, the data element documentation for DEMOF1TYPE is displayed, since this is called in the dialog module F1_HELP_FIELD3 by the function module HELP_OBJECT_SHOW_FOR_FIELD.
When the user chooses F1 on the input field for FIELD4, the SAPscript documentation DEMO_FOR_F1_HELP is displayed, since this is called in the dialog module F1_HELP_FIELD4 by the function module HELP_OBJECT.
Regards,
Deepu.K

How to attach F4 Help for a field in Items Overview in ME21n (PO Creation)

Dear All,
Can anyone pls suggest me how to attach F4 hlp for this (Field is BEDNR).
Best Regards.

Hello,
I'm relatively new in ABAP, and i have the same problem with yours, only in a different field. My company wants to have a search help in Requirement Tracking No. (BEDNR) in table EKPO.
Can you tell me what was your solution?
I tried to attach the existing search help to field BEDNR, but i can't.
Edited by: ellainne22 on Oct 4, 2011 4:34 AM

How to add search help for field in ALV object

Hello,
In a program, we use ALV object ( container) to create a liste like : field1, field2 .. but when display we do not have search help for this . Could you please help me how to add match code in this case for field 1 and field2, We use set_table_for_first_display
Thanks,

Hi,
when you define your field catalogue you can create data elements with search help in se11 and use them for field 1 and field 2.
But maybe it is enough to use data elements belonging to a domain with a value help and to set field F$AVAILABL in the field catalogue or to fill the name of the field CHECKTABLE.
Regards,
Klaus

How to add F1 help for a field

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