CALL FUNCTION 'GUI_UPLOAD'    EXPORTING      filename                = lv_filename      filetype                = 'ASC'      has_field_separator     = 'X'    TABLES      data_tab                = lt_dummy    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.    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.    EXIT.  ENDIF.  CHECK sy-subrc EQ 0.CALL FUNCTION 'TEXT_CONVERT_XLS_TO_SAP'    EXPORTING      i_field_seperator    = ''      i_line_header        = ''      i_tab_raw_data       = lt_dummy      i_filename           = i_file    TABLES      i_tab_converted_data = pt_upload    EXCEPTIONS      conversion_failed    = 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.    EXIT.  ENDIF.