Background processing - unable to access the file

Question

Hi Gurus!
01/09/2009 00:00:06 Job started
01/09/2009 00:00:06 Step 001 started (program ZWELL_UPLOAD, variant 20080107WMI-1, user ID STIWARI)
01/09/2009 00:00:06 File P:\SAP\ERP\ZWELL\wmigdc\wmi_dls_extract_20090107_3 does not exist or cannot be opened
01/09/2009 00:00:06 Step 002 started (program ZWELL_UPLOAD, variant 20080107WMI-2, user ID STIWARI)
01/09/2009 00:00:06 File P:\SAP\ERP\ZWELL\wmigdc\wmi_dls_extract_20090107_2 does not exist or cannot be opened
01/09/2009 00:00:06 Step 003 started (program ZWELL_UPLOAD, variant 20080107WMI-3, user ID STIWARI)
01/09/2009 00:00:07 File P:\SAP\ERP\ZWELL\wmigdc\wmi_dls_extract_20090107_3 does not exist or cannot be opened
01/09/2009 00:00:07 Job finished
Can I get some help as to why is it not able to loacte the file when run through background processing when its able to read and excute when I directly run the program. Is theer any settings that I need to set up in the ABAP program itself which will enable to make it happen or else what to do so that I can set a background job to happen successfully.
Thanks

Answer 1

I have assigned thhose correctly I believe.
*   Selection-Screen                                            *
selection-screen  begin of block 1 with frame title text-001.
parameters:  p_bukrs type t001-bukrs default '1000',      " company code
             p_zss type zsds_uwi-zss,                     " Survey system
             p_pathps like rlgrap-filename modif id g1 ,  " Presentation server path
             p_pathas like rlgrap-filename modif id g2 ,  " Application server path
*             p_pbkas  LIKE rlgrap-filename MODIF ID g2 ,  " Backup path
             p_err    like rlgrap-filename ,               " error file as SAP table format
             p_err2   LIKE rlgrap-filename,               " error file as input format
             p_ps like ssfparms-binccerts radiobutton group ssff " Presentation server
             default 'X' user-command shift,
             p_as like ssfparms-binccerts radiobutton group ssff." Application server
selection-screen  end of block 1.
*   Includes                                                           *
include zwellupd0001. "Top Include
include zwellupd0002. "Form Include
*  Initialization.
initialization.
*--- Assign default '1' to survey system
  p_zss = v_zss = 1.
*  At Selection-Screen                                          *
at selection-screen output.
  perform modify_screen.
*-Presentation
at selection-screen on value-request for p_pathps.
  call function 'KD_GET_FILENAME_ON_F4'
    exporting
      static    = c_x
    changing
      file_name = p_pathps.
*-Application
at selection-screen on value-request for p_pathas.
*- Assign the Physical File Name Using a Logical File Name
  call function 'FILE_GET_NAME'
    exporting
      client           = sy-mandt
      logical_filename = c_asin
      operating_system = sy-opsys
    importing
      file_name        = p_pathas
    exceptions
      file_not_found   = 1
      others           = 2.
  if sy-subrc <> 0.
    message id sy-msgid type sy-msgty number sy-msgno
            with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  endif.
at selection-screen on value-request for p_err.
    call function 'KD_GET_FILENAME_ON_F4'
    exporting
      static    = c_x
    changing
      file_name = p_err.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_err2.
    CALL FUNCTION 'KD_GET_FILENAME_ON_F4'
    EXPORTING
      static    = c_x
    CHANGING
      file_name = p_err2.
*  Start-Of-Selection                                           *
start-of-selection.
*---Modify the screen variables as per the user selection
  perform initialize.
*--- Upload file from Presentation
*  PERFORM upload_ps .
**--- Upload file from Application
*  PERFORM upload_as .
  perform upload_file.
  perform write_err_file.
*  perform write_err2_file.
  perform write_report.
*  End-Of-Selection                                             *
end-of-selection.
*&      Form  modify_screen
*       Modify the screen variables as per the user selection
form modify_screen .
  if p_ps = 'X'.
    loop at screen.
      check screen-group1 = c_g2.
      screen-active = 0.
      modify screen.
    endloop.
  else.
    loop at screen.
      check screen-group1 = c_g1.
      screen-active = 0.
      modify screen.
    endloop.
  endif.
endform.                    " modify_screen
*&      Form  initialize
*       Assign Local Variables
form initialize .
*-Pass selection screen fields to local variables.
  v_zss      = p_zss.
  v_pathas   = p_pathas.
  v_pathps   = p_pathps.
*  v_pathbkas = p_pbkas.
  v_ps       = p_ps.
  v_as       = p_as.
  v_bukrs    = p_bukrs.
endform.                    " initialize
*&      Form  write_report
*       text
*  -->  p1        text
*  <--  p2        text
form write_report .
   if v_zss = 1.
      write: /  '*** Update report for DLS ***'.
   else.
       write: /  '*** Update report for NTS ***'.
   endif.
   write:
          / 'Input File Count', g_inp_count,
          / 'Insert     Count', g_insert_count,
          / 'Updated    Count', g_upd_count,
          / 'Failed     Count', g_err_count.
endform.                    " write_report
*&      Form  write_err_file
*       text
*  -->  p1        text
*  <--  p2        text
form write_err_file .
       case p_as.
        when 'X'.                      "X is application server
*         TRANSLATE FILENAME USING '\/'." correct slash for unix
          open dataset p_err for output in text mode encoding default.
          if sy-subrc = 0.
            loop at t_err into s_welldls.
              transfer s_welldls to p_err.
              if sy-subrc ne 0.
                message i010(ad) with p_err 'Download Failed'.
              endif.
            endloop.
            close dataset p_err.
          else.
            message i010(ad) with p_err 'dataset could not be found'.
            sy-subrc = -1.             "Maintain error condition
          endif.
        when ' '.                      "Blank is presenation server
          translate p_err using '/\'."correct slash Dos file
          call function 'DOWNLOAD'
               exporting
                    filename = p_err
                    filetype = 'DAT'   "FTYPE set to ASC in DATA seg
               tables
                    data_tab = t_err.
               if sy-subrc ne 0.
            message i010(ad) with 'File ' p_err 'cannot be located.'.
            sy-subrc = -1.             "Maintain error condition
            exit.
          endif.
      endcase.
endform.                    " write_err_file
even the constants:
*-Declare survey system as constants
CONSTANTS: c_dls TYPE zsds_uwi-zss VALUE '1',
           c_nts TYPE zsds_uwi-zss VALUE '2',
           c_x   TYPE c VALUE 'X'.
*-Logical File Path maintained in Txn FILE
CONSTANTS:
c_asin  TYPE filename-fileintern VALUE 'Z_INTERFACES_IN_WELL_MASTER',
c_asout TYPE filename-fileintern VALUE 'Z_INTERFACES_OUT_WELL_MASTER'.
*-Screen Grouping
CONSTANTS:
c_g1 TYPE screen-group1 VALUE 'G1',
c_g2 TYPE screen-group1 VALUE 'G2'.
DATA: v_folder  TYPE string.
DATA: v_filestr TYPE string.
DATA: v_datalen TYPE i.
DATA v_rec(1000).
Thanks