Error In report

[Former Member]

Hello all,

I am using GUI_DOWNLOAD in my report to download the data to pC.I am able to download the data correctly. i am able to get the fieldnames also. But they are coming in a worng way, i.e all field names are coming first in a column(not in a row)

wise then the data is coming.I am giving my code below, can anybody explain where i did wrong.

ABLES: mara, "GENERAL MASTER DATA

marc, "PLANT DATA FOR MATERIAL

mard, "STORAGE LOCATION DATA FOR MATERIAL

mvke, "SALES DATA FOR MATERIAL

makt, "MATERIAL DESCRIPTION

ekpo. "PURCHASING DOCUMENT ITEM.

TYPE-POOLS : SLIS.

• ALL THE INTERNAL TABLES STRUCTURES AND CONSTANTS DEFINATIONS ARE **

• DECLARED IN TYPE-POOL CALLED SLIS **

DATA: vt_fieldcatlog1 TYPE SLIS_T_FIELDCAT_ALV.

• THIS INTERNAL TABLE CONTAINS THE FIELD ATTRIBUTES *

DATA: v_layout TYPE SLIS_LAYOUT_ALV.

DATA: bdcdata LIKE bdcdata OCCURS 0 WITH HEADER LINE.

DATA: BEGIN OF field_names OCCURS 0,

text(100),

END OF field_names.

• INTERNAL TABLE FOR APPENDING FIELD NAMES IN THE FILE

***********************************************************************

• I N T E R N A L T A B L E S *******************

***********************************************************************

DATA:BEGIN OF i_marc OCCURS 0,

matnr LIKE marc-matnr,

werks LIKE marc-werks,

dispo LIKE marc-dispo,

END OF i_marc.

DATA:BEGIN OF i_mard OCCURS 0,

matnr LIKE mard-matnr,

lgort LIKE mard-lgort,

labst LIKE mard-labst,

END OF i_mard.

DATA: BEGIN OF i_mvke OCCURS 0,

matnr LIKE mvke-matnr,

vkorg LIKE mvke-vkorg,

vtweg LIKE mvke-vtweg,

END OF i_mvke.

DATA: Begin of i_ekpo occurs 0,

ebeln LIKE ekpo-ebeln,

ebelp LIKE ekpo-ebelp,

matnr LIKE ekpo-matnr,

End of i_ekpo.

DATA: BEGIN OF i_out occurs 0,

matnr LIKE marc-matnr,

werks LIKE marc-werks,

dispo LIKE marc-dispo,

mbrsh LIKE mara-mbrsh,

meins LIKE mara-meins,

matkl LIKE mara-matkl,

vkorg LIKE mvke-vkorg,

vtweg LIKE mvke-vtweg,

spras LIKE makt-spras,

maktx LIKE makt-maktx,

lgort LIKE mard-lgort,

labst LIKE mard-labst,

ebeln LIKE ekpo-ebeln,

ebelp LIKE ekpo-ebelp,

END OF i_out.

***********************************************************************

• S E L E C T I O N S C R E E N *******************

***********************************************************************

SELECTION-SCREEN BEGIN OF BLOCK b1 WITH FRAME TITLE TEXT-100.

PARAMETERS: p_werks LIKE marc-werks. "OBLIGATORY.

SELECT-OPTIONS: s_matnr FOR marc-matnr, "OBLIGATORY,

s_lgort FOR mard-lgort,

s_dispo FOR marc-dispo,

s_ebeln FOR ekpo-ebeln no intervals.

SELECTION-SCREEN END OF BLOCK b1.

*

*SELECTION-SCREEN BEGIN OF BLOCK b2 WITH FRAME TITLE TEXT-101.

*

*PARAMETER : savelist AS CHECKBOX.

*PARAMETER : p_file LIKE RLGRAP-FILENAME DEFAULT 'C:\MATERIAL.TXT'.

*

*SELECTION-SCREEN END OF BLOCK b2.

***********************************************************************

• S T A R T - O F - S E L EC T I O N *******************

***********************************************************************

START-OF-SELECTION.

SELECT matnr werks dispo

FROM marc

INTO TABLE i_marc

WHERE matnr IN s_matnr

AND werks EQ p_werks

AND dispo IN s_dispo.

IF i_marc[] IS INITIAL.

WRITE:/'NO MATCHING DATA IS FOUND FROM TABLE MARC'.

EXIT.

ENDIF.

SELECT matnr lgort labst

FROM mard

INTO TABLE i_mard

FOR ALL ENTRIES IN i_marc

WHERE matnr = i_marc-matnr

AND werks EQ i_marc-werks

AND lgort IN s_lgort.

IF i_mard[] IS INITIAL.

WRITE:/ 'NO MATCHING DATA IS SELECTED FROM TABLE MARD'.

EXIT.

ENDIF.

SELECT matnr vkorg vtweg

FROM mvke

INTO TABLE i_mvke

FOR ALL ENTRIES IN i_marc

WHERE matnr = i_marc-matnr.

IF i_mvke[] IS INITIAL.

WRITE:/ 'NO MATCHING DATA IS SELECTED FROM TABLE MVKE'.

EXIT.

ENDIF.

SELECT ebeln ebelp matnr

FROM ekpo

INTO TABLE i_ekpo

FOR ALL ENTRIES IN i_marc

WHERE matnr = i_marc-matnr

AND ebeln IN s_ebeln.

IF i_ekpo[] IS INITIAL.

WRITE:/ 'NO MATCHING DATA IS SELECTED FROM TABLE EKPO'.

EXIT.

ENDIF.

LOOP AT i_marc.

MOVE-CORRESPONDING i_marc TO i_out.

CLEAR marc.

SELECT SINGLE matnr mbrsh meins matkl

FROM mara

INTO CORRESPONDING FIELDS OF mara

WHERE matnr = i_out-matnr.

IF SY-SUBRC = 0.

MOVE-CORRESPONDING mara TO i_out.

ELSE.

CONTINUE.

ENDIF.

SELECT SINGLE matnr spras maktx

FROM makt

INTO CORRESPONDING FIELDS OF makt

WHERE matnr = i_out-matnr

AND spras = SY-LANGU.

IF SY-SUBRC = 0.

MOVE-CORRESPONDING makt TO i_out.

ENDIF.

LOOP AT i_mard WHERE matnr = i_marc-matnr.

MOVE:i_mard-lgort TO i_out-lgort,

i_mard-labst TO i_out-labst.

ENDLOOP.

LOOP AT i_mvke WHERE matnr = i_marc-matnr.

MOVE:i_mvke-vkorg TO i_out-vkorg,

i_mvke-vtweg TO i_out-vtweg.

ENDLOOP.

READ TABLE i_ekpo WITH KEY matnr = i_marc-matnr BINARY SEARCH.

IF sy-subrc EQ 0.

MOVE: i_ekpo-ebeln TO i_out-ebeln,

i_ekpo-ebelp TO i_out-ebelp.

ENDIF.

APPEND i_out.

DELETE ADJACENT DUPLICATES FROM I_OUT.

CLEAR i_out.

ENDLOOP.

PERFORM list_output_headings.

*Subroutine For Displaying Fieldnames on the output list

PERFORM get_fieldcat1.

*Subroutine For Displaying Fields in Respective Positions

PERFORM get_fieldcat2.

*Subroutine For Top of page and log Display

***********************************************************************

• E N D - O F - S E L EC T I O N ***********************

***********************************************************************

END-OF-SELECTION.

----

---

• F O R M list_output_headings. *

----

---

FORM list_output_headings.

• IF savelist = 'X'.

field_names-text = 'Material No'.

APPEND field_names.

CLEAR field_names.

field_names-text = 'Plant'.

APPEND field_names.

CLEAR field_names.

field_names-text = 'MRP Control'.

APPEND field_names.

CLEAR field_names.

field_names-text = 'Industry'.

APPEND field_names.

CLEAR field_names.

field_names-text = 'Unit of Measure'.

APPEND field_names.

CLEAR field_names.

field_names-text = 'Material Group'.

APPEND field_names.

CLEAR field_names.

field_names-text = 'Sales Org'.

APPEND field_names.

CLEAR field_names.

field_names-text = 'Dst Channel'.

APPEND field_names.

CLEAR field_names.

field_names-text = 'Material Desc'.

APPEND field_names.

CLEAR field_names.

field_names-text = 'Storage Loct'.

APPEND field_names.

CLEAR field_names.

field_names-text = 'Stock'.

APPEND field_names.

CLEAR field_names.

field_names-text = 'Purchase Docu No'.

APPEND field_names.

CLEAR field_names.

field_names-text = 'Item No'.

APPEND field_names.

CLEAR field_names.

CALL FUNCTION 'GUI_DOWNLOAD'

EXPORTING

FILENAME = 'C:\RAV.XLS'

FILETYPE = 'ASC'

WRITE_FIELD_SEPARATOR = 'X'

TABLES

DATA_TAB = field_names

EXCEPTIONS

FILE_WRITE_ERROR = 1.

CALL FUNCTION 'GUI_DOWNLOAD'

EXPORTING

FILENAME = 'C:\RAV.XLS'

FILETYPE = 'ASC'

APPEND = 'X'

WRITE_FIELD_SEPARATOR = 'X'

TABLES

DATA_TAB = i_out

EXCEPTIONS

FILE_WRITE_ERROR = 1

NO_BATCH = 2

GUI_REFUSE_FILETRANSFER = 3.

• ENDIF.

ENDFORM. "list_output_headings

----

---

• F O R M GET_FIELDCAT1. *

----

---

FORM get_fieldcat1.

DATA: v_fieldcatlog TYPE SLIS_FIELDCAT_ALV.

*DATA: v_fieldcatlog TYPE STANDARD TABLE OF

• SLIS_FIELDCAT_ALV WITH HEADER LINE.

v_fieldcatlog-col_pos = '1'.

v_fieldcatlog-fieldname = 'MATNR'.

v_fieldcatlog-tabname = 'I_OUT'.

v_fieldcatlog-ref_fieldname = 'MATNR'.

v_fieldcatlog-ref_tabname = 'MARC'.

v_fieldcatlog-hotspot = 'X'.

APPEND v_fieldcatlog TO vt_fieldcatlog1.

CLEAR v_fieldcatlog.

v_fieldcatlog-col_pos = '2'.

v_fieldcatlog-fieldname = 'WERKS'.

v_fieldcatlog-tabname = 'I_OUT'.

v_fieldcatlog-ref_fieldname = 'WERKS'.

v_fieldcatlog-ref_tabname = 'MARC'.

APPEND v_fieldcatlog TO vt_fieldcatlog1.

CLEAR v_fieldcatlog.

v_fieldcatlog-col_pos = '3'.

v_fieldcatlog-fieldname = 'DISPO'.

v_fieldcatlog-tabname = 'I_OUT'.

v_fieldcatlog-ref_fieldname = 'DISPO'.

v_fieldcatlog-ref_tabname = 'MARC'.

APPEND v_fieldcatlog TO vt_fieldcatlog1.

CLEAR v_fieldcatlog.

v_fieldcatlog-col_pos = '4'.

v_fieldcatlog-fieldname = 'MBRSH'.

v_fieldcatlog-tabname = 'I_OUT'.

v_fieldcatlog-ref_fieldname = 'MBRSH'.

v_fieldcatlog-ref_tabname = 'MARA'.

APPEND v_fieldcatlog TO vt_fieldcatlog1.

CLEAR v_fieldcatlog.

v_fieldcatlog-col_pos = '5'.

v_fieldcatlog-fieldname = 'MEINS'.

v_fieldcatlog-tabname = 'I_OUT'.

v_fieldcatlog-ref_fieldname = 'MEINS'.

v_fieldcatlog-ref_tabname = 'MARA'.

APPEND v_fieldcatlog TO vt_fieldcatlog1.

CLEAR v_fieldcatlog.

v_fieldcatlog-col_pos = '6'.

v_fieldcatlog-fieldname = 'MATKL'.

v_fieldcatlog-tabname = 'I_OUT'.

v_fieldcatlog-ref_fieldname = 'MATKL'.

v_fieldcatlog-ref_tabname = 'MARA'.

APPEND v_fieldcatlog TO vt_fieldcatlog1.

CLEAR v_fieldcatlog.

v_fieldcatlog-col_pos = '7'.

v_fieldcatlog-fieldname = 'VKORG'.

v_fieldcatlog-tabname = 'I_OUT'.

v_fieldcatlog-ref_fieldname = 'VKORG'.

v_fieldcatlog-ref_tabname = 'MVKE'.

APPEND v_fieldcatlog TO vt_fieldcatlog1.

CLEAR v_fieldcatlog.

v_fieldcatlog-col_pos = '8'.

v_fieldcatlog-fieldname = 'VTWEG'.

v_fieldcatlog-tabname = 'I_OUT'.

v_fieldcatlog-ref_fieldname = 'VTWEG'.

v_fieldcatlog-ref_tabname = 'MVKE'.

APPEND v_fieldcatlog TO vt_fieldcatlog1.

CLEAR v_fieldcatlog.

v_fieldcatlog-col_pos = '9'.

v_fieldcatlog-fieldname = 'MAKTX'.

v_fieldcatlog-tabname = 'I_OUT'.

v_fieldcatlog-ref_fieldname = 'MAKTX'.

v_fieldcatlog-ref_tabname = 'MAKT'.

APPEND v_fieldcatlog TO vt_fieldcatlog1.

CLEAR v_fieldcatlog.

v_fieldcatlog-col_pos = '10'.

v_fieldcatlog-fieldname = 'LGORT'.

v_fieldcatlog-tabname = 'I_OUT'.

v_fieldcatlog-seltext_L = 'Strg Loct'. "Changing the fieldname

v_fieldcatlog-outputlen = 10.

APPEND v_fieldcatlog TO vt_fieldcatlog1.

CLEAR v_fieldcatlog.

v_fieldcatlog-col_pos = '11'.

v_fieldcatlog-fieldname = 'LABST'.

v_fieldcatlog-tabname = 'I_OUT'.

v_fieldcatlog-seltext_M = 'Stock'.

v_fieldcatlog-outputlen = 15.

v_fieldcatlog-do_sum = 'X'. "Displaying the Grand Total

v_layout-totals_text = 'Total Stock:'.

v_fieldcatlog-hotspot = 'X'.

APPEND v_fieldcatlog TO vt_fieldcatlog1.

CLEAR v_fieldcatlog.

v_fieldcatlog-col_pos = '12'.

v_fieldcatlog-fieldname = 'EBELN'.

v_fieldcatlog-tabname = 'I_OUT'.

v_fieldcatlog-ref_fieldname = 'EBELN'.

v_fieldcatlog-ref_tabname = 'EKPO'.

v_fieldcatlog-hotspot = 'X'.

APPEND v_fieldcatlog TO vt_fieldcatlog1.

CLEAR v_fieldcatlog.

v_fieldcatlog-col_pos = '13'.

v_fieldcatlog-fieldname = 'EBELP'.

v_fieldcatlog-tabname = 'I_OUT'.

v_fieldcatlog-ref_fieldname = 'EBELP'.

v_fieldcatlog-ref_tabname = 'EKPO'.

APPEND v_fieldcatlog TO vt_fieldcatlog1.

CLEAR v_fieldcatlog.

ENDFORM. "get_fieldcat1

----

---

• F O R M GET_FIELDCAT2. *

----

---

FORM get_fieldcat2.

CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'

EXPORTING

I_CALLBACK_PROGRAM = SY-REPID

I_CALLBACK_TOP_OF_PAGE = 'TOP_OF_PAGE'

I_CALLBACK_USER_COMMAND = 'DISPLAY'

IS_LAYOUT = v_layout

IT_FIELDCAT = vt_fieldcatlog1

TABLES

T_OUTTAB = i_out.

IF SY-SUBRC <> 0.

ENDIF.

ENDFORM. "get_fieldcat2

&----

---

*& Form TOP_OF_PAGE *

&----

---

FORM TOP_OF_PAGE.

DATA: SLISTHEADER TYPE SLIS_T_LISTHEADER,

WLISTHEADER TYPE SLIS_LISTHEADER.

WLISTHEADER-TYP = 'H'.

WLISTHEADER-INFO =

'MATERIAL EXTRACTION ALV REPORT'.

APPEND WLISTHEADER TO SLISTHEADER.

WLISTHEADER-TYP = 'A'.

WLISTHEADER-INFO =

'SELECT MATERIAL FOR DISPLAY MATERIAL DETAILS'.

APPEND WLISTHEADER TO SLISTHEADER.

WLISTHEADER-TYP = 'A'.

WLISTHEADER-INFO =

'SELECT PURCHASE DOCU NO FOR PURCHASE ORDER DETAILS'.

APPEND WLISTHEADER TO SLISTHEADER.

CALL FUNCTION 'REUSE_ALV_COMMENTARY_WRITE'

EXPORTING

I_LOGO = 'ENJOYSAP_LOGO'

IT_LIST_COMMENTARY = SLISTHEADER.

ENDFORM. " TOP_OF_PAGE

&----

---

*& F O R M D I S P L A Y *

&----

---

FORM dispLAY USING ucomm LIKE sy-ucomm

selfield TYPE slis_selfield.

CASE ucomm.

WHEN '&IC1'. "FOR DOUBLE CLICK

READ TABLE i_out INDEX selfield-tabindex.

IF sy-subrc = 0.

IF selfield-fieldname = 'MATNR'.

SET PARAMETER ID 'MXX' FIELD 'D'.

SET PARAMETER ID 'MAT' FIELD selfield-value.

SET PARAMETER ID 'WRK' FIELD p_werks.

CALL TRANSACTION 'MM03' AND SKIP FIRST SCREEN.

ENDIF.

IF selfield-fieldname = 'EBELN'.

SET PARAMETER ID 'BES' FIELD selfield-value.

CALL TRANSACTION 'ME22N' AND SKIP FIRST SCREEN.

ENDIF.

ENDIF.

ENDCASE.

[Former Member]

Hello Madhavi,

Instead of GUI_DOWNLOAD use WS_DOWNLOAD like this

 DATA: L_F_COUNT TYPE I.
  DATA: L_F_HEADERS TYPE TEXT40,
        L_F_NAME TYPE TEXT40,
        L_F_INDEX TYPE NUMC2,
        L_T_HEADERS TYPE TABLE OF TEXT40.
  FIELD-SYMBOLS <FS_HEADER>.
  DATA: L_VA_SEPAR TYPE X VALUE '09'. "Tabulator
  DATA: L_VA_FIELD TYPE TEXT200,
        L_VA_FIELD_S TYPE STRING,
        L_VA_OUT_S TYPE STRING.
  FIELD-SYMBOLS <FIELD> TYPE ANY.
* Headings: TEXT-U01 ... TEXT-U28
  DO 17 TIMES.
    CLEAR: L_F_INDEX,L_F_NAME,L_F_HEADERS.
    L_F_INDEX = SY-INDEX.
    CONCATENATE 'TEXT-0' L_F_INDEX INTO L_F_NAME.
    ASSIGN (L_F_NAME) TO <FS_HEADER>.
    L_F_HEADERS = <FS_HEADER>.
    APPEND L_F_HEADERS TO L_T_HEADERS.
  ENDDO.

  CLEAR: G_T_LISTE.
  IF NOT PC IS INITIAL.
    CALL FUNCTION 'WS_DOWNLOAD'
         EXPORTING
              FILENAME                = FILENAME
              FILETYPE                = 'DAT'
         TABLES
              DATA_TAB                = G_T_LISTE
              FIELDNAMES              = L_T_HEADERS
         EXCEPTIONS
              INVALID_FILESIZE        = 1
              INVALID_TABLE_WIDTH     = 2
              INVALID_TYPE            = 3
              NO_BATCH                = 4
              UNKNOWN_ERROR           = 5
              GUI_REFUSE_FILETRANSFER = 6
              CUSTOMER_ERROR          = 7
              OTHERS                  = 8.
    IF SY-SUBRC <> 0.
      MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
    ELSE.
      DESCRIBE TABLE G_T_LISTE LINES L_F_COUNT.
      SUBTRACT 1 FROM L_F_COUNT.
      MESSAGE I145(Z48MM) WITH L_F_COUNT FILENAME.
    ENDIF.
endif.

Please reward if helps.

Vasanth

[Former Member]

Hi,

Declare the field names Int tables like this:

*Internal Table

data: begin of fieldnames occurs 0,

title(25) type c,

table(5) type c,

field(5) type c,

type(1) type c,

end of fieldnames.

perform init_fieldnames.

&----

---

*& Form init_fieldnames

&----

---

• Initialise all the fields to download in Excel Data File

----

---

form init_fieldnames.

perform append_fieldname using text-004 'itab_out1'

'KUNAG' 'X'.

perform append_fieldname using text-037 'itab_out1'

'VBELN' 'X'.

perform append_fieldname using text-036 'itab_out1'

'FKDAT' 'X'.

endform.

&----

---

*& Form append_fieldname

&----

---

• Appending field Names

----

---

form append_fieldname using p_title p_table p_field p_type.

clear: fieldnames.

fieldnames-title = p_title.

fieldnames-table = p_table.

fieldnames-field = p_field.

fieldnames-type = p_type.

append fieldnames.

endform.

then pass this fieldnames to your fun module.

Reward if useful.

regards,

Anji

[Former Member]

This is because you have appended column names into the table "field_names", by appending the names will come one below the other in rows. You need to assign the field names to the corresponding columns and NOT append. Then do a GUI_DOWNLOAD

After that you again do GUI_DOWNLOAD with APPEND = X, to download data.

[Former Member]

Hi Madhavi,

You should have another internal table like i_out which would have fields to hold the names of the columns. You should pass that internal table to the data .

DATA: BEGIN OF i_out occurs 0,

matnr(18),

werks(5),

dispo(10),

.

.

.

.

.

.

END OF i_out_heading.

i_out_heading-matnr = 'Material Number'.

i_out_heading-werks = 'Plant'.

.

.

.

append i_out_heading.

CALL FUNCTION 'GUI_DOWNLOAD'

EXPORTING

FILENAME = 'C:\RAV.XLS'

FILETYPE = 'ASC'

WRITE_FIELD_SEPARATOR = 'X'

TABLES

DATA_TAB = i_out_heading

EXCEPTIONS

FILE_WRITE_ERROR = 1.

CALL FUNCTION 'GUI_DOWNLOAD'

EXPORTING

FILENAME = 'C:\RAV.XLS'

FILETYPE = 'ASC'

APPEND = 'X'

WRITE_FIELD_SEPARATOR = 'X'

TABLES

DATA_TAB = i_out

EXCEPTIONS

FILE_WRITE_ERROR = 1

NO_BATCH = 2

GUI_REFUSE_FILETRANSFER = 3.

[Former Member]

change the declaration field_names and remaining code as below.

DATA: BEGIN OF field_names OCCURS 0,

text1(15),

text2(15),

text3(15),

text4(15),

text5(15),

text6(15),

text7(15),

text8(15),

text8(15),

text10(15),

text11(15),

text12(15),

text13(15),

END OF field_names.

field_names-text1 = 'Material No'.

field_names-text2 = 'Plant'.

field_names-text3 = 'MRP Control'.

field_names-text4 = 'Industry'.

field_names-text5 = 'Unit of Measure'.

field_names-text6 = 'Material Group'.

field_names-text7 = 'Sales Org'.

field_names-text8 = 'Dst Channel'.

field_names-text9 = 'Material Desc'.

field_names-text10 = 'Storage Loct'.

field_names-text11 = 'Stock'.

field_names-text12 = 'Purchase Docu No'.

field_names-text13 = 'Item No'.

APPEND field_names.

CALL FUNCTION 'GUI_DOWNLOAD'

EXPORTING

FILENAME = 'C:\RAV.XLS'

FILETYPE = 'ASC'

WRITE_FIELD_SEPARATOR = 'X'

TABLES

DATA_TAB = field_names

EXCEPTIONS

FILE_WRITE_ERROR = 1.

CALL FUNCTION 'GUI_DOWNLOAD'

EXPORTING

FILENAME = 'C:\RAV.XLS'

FILETYPE = 'ASC'

APPEND = 'X'

WRITE_FIELD_SEPARATOR = 'X'

TABLES

DATA_TAB = i_out

EXCEPTIONS

FILE_WRITE_ERROR = 1

NO_BATCH = 2

GUI_REFUSE_FILETRANSFER = 3.

• ENDIF.

ENDFORM. "list_output_headings

[Former Member]

hi Madhavi,

replace your code with the following in form <b>list_output_headings</b>

FORM list_output_headings.

data field_names type table of tdline.
data ls_field_names like line of tdline.

* IF savelist = 'X'.
concatenate 'Material No' 'Plant' 
'MRP Control' 'Industry' 'Unit of Measure'  
'Material Group' 'Sales Org'  'Dst Channel' 
'Material Desc' 'Storage Loct'  'Stock' 
'Purchase Docu No' 'Item No' into 
ls_field_names separated by cl_abap_char_utilities=>horizontal_tab.

APPEND ls_field_names to field_names.

CALL FUNCTION 'GUI_DOWNLOAD'
EXPORTING
FILENAME = 'C:RAV.XLS'
FILETYPE = 'ASC'
WRITE_FIELD_SEPARATOR = 'X'
TABLES
DATA_TAB = field_names
EXCEPTIONS
FILE_WRITE_ERROR = 1.

ENDFORM.

.

Hope this helps,

Sajan Joseph.