Exception UNKNOWN_ERROR while using GUI_DOWNLOAD in POWL

Question

Hi,
I am trying to use FM GUI_DOWNLOAD to download an internal table in POWL to an excel sheet.
Using GUI_DOWNLOAD I get an exception 6 = UNKNOWN_ERROR.
Can anyone help? Or should I be using another function module? If yes, which?
Cheers
Kiran

Answer 1

Hello Kiran,
Strange Problem. Please try the code below. Also, please try any other drive other than C drive.
w_path---> file path in presentation server.
  IF w_filepath IS NOT INITIAL.
    CALL FUNCTION 'GUI_DOWNLOAD'
      EXPORTING
        filename                  = w_filepath  "TYPE STRING
      TABLES
        data_tab                  = p_t_output "TYPE STANDARD TABLE.
      EXCEPTIONS
        file_write_error          = 1
        no_batch                  = 2
        gui_refuse_filetransfer   = 3
        invalid_type              = 4
        no_authority              = 5
        unknown_error             = 6
        header_not_allowed        = 7
        separator_not_allowed     = 8
        filesize_not_allowed      = 9
        header_too_long           = 10
        dp_error_create           = 11
        dp_error_send             = 12
        dp_error_write            = 13
        unknown_dp_error          = 14
        access_denied             = 15
        dp_out_of_memory          = 16
        disk_full                 = 17
        dp_timeout                = 18
        file_not_found            = 19
        dataprovider_exception    = 20
        control_flush_error       = 21
        OTHERS                    = 22.
    CASE sy-subrc.
      WHEN 0.
        IF w_flaginfo IS INITIAL.
          MESSAGE i109.
          w_flaginfo = 1.
        ENDIF.
      WHEN 1.
        MESSAGE e033 . "file write error
      WHEN 2.
        MESSAGE e034 . "no batch
      WHEN 3.
        MESSAGE e035 . "gui refuse filetransfer
      WHEN 4.
        MESSAGE e036 . "invalid type
      WHEN 5.
        MESSAGE e037 . "no authority
      WHEN 6.
        MESSAGE e038 . "unknown error
      WHEN 7.
        MESSAGE e039 . "header not allowed
      WHEN 8.
        MESSAGE e040 . "separator not allowed
      WHEN 9.
        MESSAGE e041 . "filesize not allowed
      WHEN 10.
        MESSAGE e042 . "header too long
      WHEN 11.
        MESSAGE e043 . "dp error create
      WHEN 12.
        MESSAGE e044 . "dp error send
      WHEN 13.
        MESSAGE e045 . "dp error write
      WHEN 14.
        MESSAGE e046 . "unknown dp error
      WHEN 15.
        MESSAGE e047 . "access denied
      WHEN 16.
        MESSAGE e048 . "dp out of memory
      WHEN 17.
        MESSAGE e049 . "disk full
      WHEN 18.
        MESSAGE e050 . "dp timeout
      WHEN 19.
        MESSAGE e051 . "file not found
      WHEN 20.
        MESSAGE e052 . "dataprovider exception
      WHEN 21.
        MESSAGE e053 . "control flush error
    ENDCASE.
  ENDIF.
Please let me know if this works or not.
Thanks,
Jayant