Open dataset not working in ECC 5.0, returning 8

Question

Gurus,
Open data set is returning 8. The file is there on application server as selected by KD4 function module when I try to do open dataset it retruns 08.
REPORT XXX message-id zdolfemsg.
Data Declaration
data: v_mfile type C,
      v_ffile type C.
data: w_mpath type string,
      w_fpath type string.
SELECTION-SCREEN BEGIN OF BLOCK b1 WITH FRAME
                                   TITLE text-001.
PARAMETERS: p_master like rlgrap-filename obligatory,
                        p_func like rlgrap-filename obligatory,
SELECTION-SCREEN END OF BLOCK b1.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_master.
  CALL FUNCTION 'KD_GET_FILENAME_ON_F4'
      CHANGING
      file_name = p_master.
w_mpath = p_master.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_func.
CALL FUNCTION 'KD_GET_FILENAME_ON_F4'
    EXPORTING
      static    = 'X'
    CHANGING
      file_name = p_func.
      w_fpath = p_func.
start-of-selection.
  perform initilaization_for_master.
  perform initialization_for_func.
  if v_mfile ='X' and V_FFILE = 'X'.
    message e001 with sy-repid.
  ELSEIF V_mfile = 'X'.
    message e000 with p_master sy-repid.         "Error opening file
  ELSEIF V_FFILE = 'X'.
    message e000 with p_func sy-repid.         "Error opening file
  endif.
close dataset p_master.
close dataset p_func.
*&      Form  initilaization
      text
-->  p1        text
<--  p2        text
FORM initilaization_for_master .
  open dataset w_mpath for output in text mode encoding default.
  if sy-subrc <> 0.
    v_mfile = 'X'.
  endif.
ENDFORM.                    " initilaization
*&      Form  initialization_for_func
      text
-->  p1        text
<--  p2        text
FORM initialization_for_func .
  open dataset w_fpath for input in text mode ENCODING DEFAULT.
  if sy-subrc <> 0.
    v_ffile = 'X'.
  endif.
ENDFORM.                    " initialization_for_func
Please help.
Regards,
Rajsh.

Answer 1

Thanks Rob. How can I open the file on presentation server. I have to read the data from the file and fill in internal table.
Regards,
Rajesh.