GUI UPLOAD

  DATA ltp_filename TYPE string.
  DATA lta_data     TYPE TABLE OF X255.
  
  REFRESH lta_data.      
  CALL METHOD cl_gui_frontend_services=>gui_upload
    EXPORTING
      filename                = ltp_filename
      filetype                = 'BIN'
*      has_field_separator     = SPACE
*      header_length           = 0
*      read_by_line            = 'X'
*      dat_mode                = SPACE
*      codepage                = SPACE
*      ignore_cerr             = ABAP_TRUE
*      replacement             = '#'
*      virus_scan_profile      =
*      show_transfer_status    = 'X'
*    IMPORTING
*      filelength              =
*      header                  =
    CHANGING
      data_tab                = lta_data
    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
      not_supported_by_gui    = 17
      error_no_gui            = 18
      others                  = 19
  .
  CHECK sy-subrc = 0.

cl_gui_frontend_services
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