Hi This is a Sample Code of Call Transaction Method of BDC (Batch Data Conversion).

1. REPORT ZBDC_003 NO STANDARD PAGE HEADING LINE-SIZE 255.
TYPES: BEGIN OF TAB,
PERNR TYPE ZTAB_001-PERNR,
ENAME TYPE ZTAB_001-ENAME,
CITY TYPE ZTAB_001-CITY,
END OF TAB.
DATA: IT_TAB TYPE TABLE OF TAB,
WA_TAB TYPE TAB,
D_FILE TYPE STRING,
BDCDATA LIKE BDCDATA OCCURS 0 WITH HEADER LINE,
MESSTAB LIKE BDCMSGCOLL OCCURS 0 WITH HEADER LINE.
PARAMETERS: P_FILE TYPE IBIPPARMS-PATH OBLIGATORY.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR P_FILE.
CALL FUNCTION 'F4_FILENAME'
IMPORTING
FILE_NAME = P_FILE.
D_FILE = P_FILE.
CALL FUNCTION 'GUI_UPLOAD'
EXPORTING
FILENAME
FILETYPE
= D_FILE
= 'ASC'
HAS_FIELD_SEPARATOR
* HEADER_LENGTH
= 'X'
=0

2. * READ_BY_LINE
= 'X'
* DAT_MODE
=''
* CODEPAGE
=''
* IGNORE_CERR
= ABAP_TRUE
* REPLACEMENT
= '#'
* CHECK_BOM
=''
* VIRUS_SCAN_PROFILE
=
* NO_AUTH_CHECK
=''
* IMPORTING
* FILELENGTH
* HEADER
=
=
TABLES
DATA_TAB
= IT_TAB
EXCEPTIONS
FILE_OPEN_ERROR
=1
FILE_READ_ERROR
=2
NO_BATCH
=3
GUI_REFUSE_FILETRANSFER
INVALID_TYPE
=4
=5
NO_AUTHORITY
=6
UNKNOWN_ERROR
=7
BAD_DATA_FORMAT
=8
HEADER_NOT_ALLOWED
=9
SEPARATOR_NOT_ALLOWED
HEADER_TOO_LONG
= 10
= 11

3. UNKNOWN_DP_ERROR
= 12
ACCESS_DENIED
= 13
DP_OUT_OF_MEMORY
DISK_FULL
= 15
DP_TIMEOUT
OTHERS
= 14
= 16
= 17
.
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
START-OF-SELECTION.
*perform open_group.
*
LOOP AT IT_TAB INTO WA_TAB.
PERFORM BDC_DYNPRO
USING 'SAPMSVMA' '0100'.
PERFORM BDC_FIELD
USING 'BDC_CURSOR' 'VIEWNAME'.
PERFORM BDC_FIELD
USING 'BDC_OKCODE' '=UPD'.
PERFORM BDC_FIELD
USING 'VIEWNAME' 'ZTAB_001'.
PERFORM BDC_FIELD
USING 'VIMDYNFLDS-LTD_DTA_NO' 'X'.
PERFORM BDC_DYNPRO
USING 'SAPLZTAB_001' '0100'.
PERFORM BDC_FIELD
USING 'BDC_CURSOR' 'ZTAB_001-PERNR(01)'.
PERFORM BDC_FIELD
USING 'BDC_OKCODE'’=ANZG'.
PERFORM BDC_DYNPRO
USING 'SAPLZTAB_001' '0100'.

4. PERFORM BDC_FIELD
USING 'BDC_CURSOR' 'ZTAB_001-PERNR(01)'.
PERFORM BDC_FIELD
USING 'BDC_OKCODE' '=AEND'.
PERFORM BDC_DYNPRO
USING 'SAPLZTAB_001' '0100'.
PERFORM BDC_FIELD
USING 'BDC_CURSOR' 'ZTAB_001-PERNR(01)'.
PERFORM BDC_FIELD
USING 'BDC_OKCODE' '=NEWL'.
PERFORM BDC_DYNPRO
USING 'SAPLZTAB_001' '0100'.
PERFORM BDC_FIELD
USING 'BDC_CURSOR' 'ZTAB_001-CITY(01)'.
PERFORM BDC_FIELD
USING 'BDC_OKCODE' '/00'.
PERFORM BDC_FIELD
USING 'ZTAB_001-PERNR(01)'
WA_TAB-PERNR.
PERFORM BDC_FIELD
USING 'ZTAB_001-ENAME(01)'
WA_TAB-ENAME.
PERFORM BDC_FIELD
USING 'ZTAB_001-CITY(01)'
WA_TAB-CITY.
PERFORM BDC_DYNPRO
PERFORM BDC_FIELD
USING 'SAPLZTAB_001' '0100'.
USING 'BDC_CURSOR'
'ZTAB_001-PERNR(02)'.
PERFORM BDC_FIELD
USING 'BDC_OKCODE'
'=BACK'.
PERFORM BDC_DYNPRO
PERFORM BDC_FIELD
USING 'SAPLZTAB_001' '0100'.
USING 'BDC_CURSOR'
'ZTAB_001-PERNR(02)'.
PERFORM BDC_FIELD
USING 'BDC_OKCODE'
'=BACK'.
PERFORM BDC_DYNPRO
USING 'SAPLSPO1' '0100'.

5. PERFORM BDC_FIELD
USING 'BDC_OKCODE'
'=YES'.
PERFORM BDC_DYNPRO
PERFORM BDC_FIELD
USING 'SAPMSVMA' '0100'.
USING 'BDC_OKCODE'
'/EBACK'.
PERFORM BDC_FIELD
USING 'BDC_CURSOR'
'VIEWNAME'.
PERFORM BDC_TRANSACTION USING 'SM30'.
CLEAR: BDCDATA, BDCDATA[].
ENDLOOP.
*perform close_group.
*&---------------------------------------------------------------------*
*&
Form bdc_dynpro
*&---------------------------------------------------------------------*
*
text
*----------------------------------------------------------------------*
*
-->P_0154 text
*
-->P_0155 text
*----------------------------------------------------------------------*
FORM BDC_DYNPRO USING PROGRAM DYNPRO.
CLEAR BDCDATA.
BDCDATA-PROGRAM = PROGRAM.
BDCDATA-DYNPRO = DYNPRO.
BDCDATA-DYNBEGIN = 'X'.

6. APPEND BDCDATA.
ENDFORM.
" bdc_dynpro
*&---------------------------------------------------------------------*
*&
Form bdc_field
*&---------------------------------------------------------------------*
*
text
*----------------------------------------------------------------------*
*
-->P_0304 text
*
-->P_0305 text
*----------------------------------------------------------------------*
FORM BDC_FIELD USING FNAM FVAL.
* IF FVAL <> NODATA.
CLEAR BDCDATA.
BDCDATA-FNAM = FNAM.
BDCDATA-FVAL = FVAL.
APPEND BDCDATA.
ENDFORM.
" bdc_field
*&---------------------------------------------------------------------*
*&
Form bdc_transaction
*&---------------------------------------------------------------------*
*
text
*----------------------------------------------------------------------*
*
-->P_0309 text

7. *----------------------------------------------------------------------*
FORM BDC_TRANSACTION USING TCODE.
REFRESH MESSTAB.
CALL TRANSACTION TCODE USING BDCDATA
MODE 'E'"CTUMODE
UPDATE 'S' "CUPDATE
MESSAGES INTO MESSTAB.
ENDFORM.
*include bdcrecx1.
" bdc_transaction