Error Occured While Reading File From FTP

Hello ,

I want to get file data from ftp server to my internal table, in ftp sever directory having multiples files which is in .txt format , for read file from ftp i have used 'FTP_SERVER_TO_R3' . for most of the file this function module working fine and i am able to get data of my file into internal table ,but for some file while reading it's giving me sy-subrc 3 .

all files have same format, i don't know why its giving me sy-subrc 3 (Data Error) .

for reference please see below code and attached screeenshots.

Thanks in Advance.

TYPES : BEGIN OF ty_result ,
          line(100) TYPE c,
        END OF ty_result.
DATA : result1 TYPE TABLE OF  ty_result.
DATA:it_data TYPE TABLE OF ty_result,
     wa_data TYPE ty_result.
DATA :host(64),p_spath(50),
      dest        TYPE rfcdes-rfcdest.
DATA: hdl           TYPE i,
      key           TYPE i VALUE 26101957,
      cmd1(255)     TYPE c,
      cmd(255)      TYPE c,
      slen          TYPE i,
      in_dest(100)  TYPE c.
DATA: BEGIN OF i_oldfile OCCURS 1,
        line(1200) TYPE c,
      END OF i_oldfile.
  in_dest = '/home/Documents/ ' .
CALL FUNCTION 'HTTP_SCRAMBLE'
    EXPORTING
      source      = pwd
      sourcelen   = slen
      key         = key
    IMPORTING
      destination = pwd.
  IF sy-subrc EQ 0.
    CALL FUNCTION 'FTP_CONNECT'
      EXPORTING
        user            = user
        password        = pwd
        host            = host
        rfc_destination = dest
      IMPORTING
        handle          = hdl
      EXCEPTIONS
        not_connected   = 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.
      WRITE:/ 'Not Connected'.

    ELSE.
      CALL FUNCTION 'FTP_COMMAND'
        EXPORTING
          handle        = hdl
          command       = 'set passive on'
        TABLES
          data          = result
        EXCEPTIONS
          command_error = 1
          tcpip_error   = 2.
      CONCATENATE 'cd' in_dest INTO cmd SEPARATED BY space.
      CALL FUNCTION 'FTP_COMMAND'
        EXPORTING
          handle        = hdl
          command       = cmd
        TABLES
          data          = result
        EXCEPTIONS
          command_error = 1
          tcpip_error   = 2.
**Get list file in FTP Folder
      CALL FUNCTION 'FTP_COMMAND'
        EXPORTING
          handle        = hdl
          command       = 'nlist'
        TABLES
          data          = it_data
        EXCEPTIONS
          tcpip_error   = 1
          command_error = 2
          data_error    = 3.
      LOOP AT it_data INTO wa_data WHERE line Cs 't4.txt'.    "getting data based on file name.
        CALL FUNCTION 'FTP_SERVER_TO_R3'
          EXPORTING
            handle         = hdl
            fname          = wa_data-line
            character_mode = 'X'
*      IMPORTING
*           blob_length    = ld_bloblen
          TABLES
*           blob           =
            text           = i_oldfile
          EXCEPTIONS
            tcpip_error    = 1
            command_error  = 2
            data_error     = 3
            OTHERS         = 4.ftp-error.jpgfiles.jpg
endloop.