Sample BDC program for Material master creation in MM01

REPORT zgm_bdc_mm01 NO STANDARD PAGE HEADING LINE-SIZE 255.

TYPES : BEGIN OF ty_mat,
        mbrsh(1) TYPE c,
        mtart(4) TYPE c,
        maktx(40) TYPE c,
        meins(3)  TYPE c,
        matkl(9) TYPE c,
        END OF ty_mat.

DATA: it_mat TYPE STANDARD TABLE OF ty_mat,
      wa_mat TYPE ty_mat.


DATA: it_bdcdata TYPE STANDARD TABLE OF bdcdata,
      wa_bdcdata TYPE bdcdata.

DATA: wa_opt TYPE ctu_params.

DATA : filename TYPE string.

SELECTION-SCREEN BEGIN OF BLOCK b1 WITH FRAME TITLE text-001.

PARAMETERS : p_file TYPE rlgrap-filename OBLIGATORY.

SELECTION-SCREEN END OF BLOCK b1.

AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_file.

wa_opt-nobinpt = 'X'.
wa_opt-updmode = 'A'.

*upload data form presentation server to internal table

 CALL FUNCTION 'F4_FILENAME'
    EXPORTING
      program_name  = syst-cprog
      dynpro_number = syst-dynnr
      field_name    = ' '
    IMPORTING
      file_name     = p_file.


 START-OF-SELECTION.

  filename = p_file.

  IF filename IS NOT INITIAL.

CALL FUNCTION 'GUI_UPLOAD'
  EXPORTING
    filename                      = filename
   filetype                      = 'ASC'
   has_field_separator           = 'X'
  TABLES
    data_tab                      = it_mat
* CHANGING
*   ISSCANPERFORMED               = ' '
 EXCEPTIONS
   file_open_error               = 1
   file_read_error               = 2
   no_batch                      = 3
   gui_refuse_filetransfer       = 4
   invalid_type                  = 5
   no_authority                  = 6
   unknown_error                 = 7
   bad_data_format               = 8
   header_not_allowed            = 9
   separator_not_allowed         = 10
   header_too_long               = 11
   unknown_dp_error              = 12
   access_denied                 = 13
   dp_out_of_memory              = 14
   disk_full                     = 15
   dp_timeout                    = 16
   OTHERS                        = 17
          .
IF sy-subrc <> 0.
* Implement suitable error handling here
ENDIF.

ENDIF.

END-OF-SELECTION.

LOOP AT it_mat INTO wa_mat.

PERFORM bdc_dynpro      USING 'SAPLMGMM' '0060'.
PERFORM bdc_field       USING 'BDC_CURSOR'
                              'RMMG1-MTART'.
PERFORM bdc_field       USING 'BDC_OKCODE'
                              '=ENTR'.
PERFORM bdc_field       USING 'RMMG1-MBRSH'
                               wa_mat-mbrsh.
PERFORM bdc_field       USING 'RMMG1-MTART'
                               wa_mat-mtart.
PERFORM bdc_dynpro      USING 'SAPLMGMM' '0070'.
PERFORM bdc_field       USING 'BDC_CURSOR'
                              'MSICHTAUSW-DYTXT(02)'.
PERFORM bdc_field       USING 'BDC_OKCODE'
                              '=ENTR'.
PERFORM bdc_field       USING 'MSICHTAUSW-KZSEL(01)'
                              'X'.
PERFORM bdc_field       USING 'MSICHTAUSW-KZSEL(02)'
                              'X'.
PERFORM bdc_dynpro      USING 'SAPLMGMM' '4004'.
PERFORM bdc_field       USING 'BDC_OKCODE'
                              '/00'.
PERFORM bdc_field       USING 'MAKT-MAKTX'
                              wa_mat-maktx.
PERFORM bdc_field       USING 'BDC_CURSOR'
                              'MARA-MATKL'.
PERFORM bdc_field       USING 'MARA-MEINS'
                              wa_mat-meins.
PERFORM bdc_field       USING 'MARA-MATKL'
                              wa_mat-matkl.
PERFORM bdc_field       USING 'MARA-MTPOS_MARA'
                              'NORM'.
PERFORM bdc_dynpro      USING 'SAPLMGMM' '4004'.
PERFORM bdc_field       USING 'BDC_OKCODE'
                              '/00'.
PERFORM bdc_field       USING 'BDC_CURSOR'
                              'MAKT-MAKTX'.
PERFORM bdc_field       USING 'MAKT-MAKTX'
                               wa_mat-maktx.
PERFORM bdc_dynpro      USING 'SAPLSPO1' '0300'.
PERFORM bdc_field       USING 'BDC_OKCODE'
                              '=YES'.

CALL TRANSACTION 'MM01' USING it_bdcdata OPTIONS FROM wa_opt.

CLEAR wa_mat.
REFRESH it_bdcdata.

ENDLOOP.

*----------------------------------------------------------------------*
*        Start new screen                                              *
*----------------------------------------------------------------------*
FORM bdc_dynpro USING program dynpro.
  CLEAR wa_bdcdata.
  wa_bdcdata-program  = program.
  wa_bdcdata-dynpro   = dynpro.
  wa_bdcdata-dynbegin = 'X'.
  APPEND wa_bdcdata TO it_bdcdata.
ENDFORM.

*----------------------------------------------------------------------*
*        Insert field                                                  *
*----------------------------------------------------------------------*
FORM bdc_field USING fnam fval.
    CLEAR wa_bdcdata.
    wa_bdcdata-fnam = fnam.
    wa_bdcdata-fval = fval.
    APPEND wa_bdcdata TO it_bdcdata.
  ENDFORM.