Running bapi in back ground

Question

hi all,
i had to upload material master basic view, iam updating using bapi,
i want to run this program in background. i am getting problem wen calling bapi. its not executing this bapi.
wen i run the same program its working fine.
could any body help me in this regard
below is the code
*& Report  ZTEST_BAPI_BASIC
report  ztest_bapi_basic.
types : begin of ty_mara,
        matnr type mara-matnr,
        mbrsh type mara-mbrsh,
        mtart type mara-mtart,
        meins type mara-meins,
        maktx type makt-maktx,
        end of ty_mara.
data: begin of it_makt occurs 0.
        include structure bapi_makt.
data end of it_makt.
data:begin of it_ret occurs 0.
        include structure bapiret2.
data end of it_ret.
data : t_mara type standard table of ty_mara,
       st_mara type ty_mara.
data: bapi_head like bapimathead,
      bapi_clientdata like bapi_mara,
      bapi_clientdatax like bapi_marax.
selection-screen : begin of block b1 with frame title text-001.   "SELECTION SCREEN
parameters: p_fnam like rlgrap-filename.
selection-screen : end of block b1.
at selection-screen on value-request for p_fnam.
  call function 'F4_FILENAME'                              "FUNCTION MODULE TO LOCATE THE FILE ON THE DISK
    exporting
      program_name  = syst-cprog
      dynpro_number = syst-dynnr
      field_name    = ' '
    importing
      file_name     = p_fnam.
start-of-selection.
  perform upload.
  perform bapi.
*&      Form  UPLOAD
      text
-->  p1        text
<--  p2        text
form upload .
  data : filename type string.
  filename = p_fnam.
  call function 'GUI_UPLOAD'
    exporting
      filename                      = filename
     filetype                      = 'ASC'
     has_field_separator           = 'X'
   HEADER_LENGTH                 = 0
   READ_BY_LINE                  = 'X'
   HEADER                        =
    tables
      data_tab                      = t_mara
EXCEPTIONS
  if sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  endif.
endform.                    " UPLOAD
*&      Form  BAPI
      text
-->  p1        text
<--  p2        text
form bapi .
  sort t_mara by matnr.
  loop at t_mara into st_mara.
    perform conversion using st_mara-matnr changing  st_mara-matnr.
    bapi_head-material = st_mara-matnr.
    bapi_head-ind_sector = st_mara-mbrsh.
    bapi_head-matl_type = st_mara-mtart.
    bapi_head-basic_view ='X'.
    bapi_clientdata-base_uom = st_mara-meins.
    bapi_clientdatax-base_uom = 'x'.
    refresh it_makt.
    it_makt-langu = 'E'.
    it_makt-matl_desc = st_mara-maktx.
    append it_makt.
    clear it_ret.
    refresh it_ret.
    perform update_bapi  using bapi_head
                                     bapi_clientdata
                                     bapi_clientdatax .
    read table it_ret with key type = 'S'.
    if sy-subrc eq 0.
      commit work.
    else.
      call function 'BAPI_TRANSACTION_ROLLBACK'
              IMPORTING
                RETURN        =
    endif.
  endloop.
endform.                    " BAPI
*&      Form  CONVERSION
      text
     -->INPUT      text
     -->OUTPUT     text
form conversion using input changing  output.
  call function 'CONVERSION_EXIT_ALPHA_INPUT'
    exporting
      input  = input
    importing
      output = output.
endform.                    "conversion
*&      Form  update_bapi
      text
     -->BAPI_HEAD         text
     -->BAPI_CLIENTDATA   text
     -->BAPI_CLIENTDATAX  text
form update_bapi  using bapi_head bapi_clientdata  bapi_clientdatax .
  call function 'BAPI_MATERIAL_SAVEDATA' in background task as separate unit
    exporting
      headdata                   = bapi_head
     clientdata                 = bapi_clientdata
     clientdatax                = bapi_clientdatax
  FLAG_ONLINE                = ' '
  FLAG_CAD_CALL              = ' '
  NO_DEQUEUE                 = ' '
  NO_ROLLBACK_WORK           = ' '
  importing
     return                     = it_ret
   tables
     materialdescription        = it_makt
  append it_ret.
endform.                    "update_bapi
regards
siva

Answer 1

Hi,
I'm a bit confused now - does the BAPI call work if you run it entirely in foreground or does it fail there too?
You need to ensure your BAPI works correctly with the data you are passing to it - preferably in foreground so you can debug it and see what is happening.  If it throws errors there then add them to this thread.
If it works in foreground then you probably need to schedule the job in background but as others have pointed out, you can't use the GUI_UPLOAD function to do this.
Gareth.