Problem in saving a file in FTP server

Question

Hi,
I am trying to move one zip file from an FTP directory to another. I use the below code.
OPEN DATASET gv_fname FOR INPUT IN BINARY MODE.
                IF sy-subrc IS INITIAL.
                  DO.
                    READ DATASET gv_fname INTO gs_zip_bin.
                    IF sy-subrc IS INITIAL.
                      APPEND gs_zip_bin TO gt_zip_bin.
                      CLEAR gs_zip_bin.
                    ELSE.
                      EXIT.
                    ENDIF.
                  ENDDO.
                  CLOSE DATASET gv_fname.
                  endif.
*Now for saving this file on the other folder,
OPEN DATASET gv_arname FOR OUTPUT IN BINARY MODE.
            IF sy-subrc IS INITIAL.
              LOOP AT gt_zip_bin INTO gs_zip_bin.
                TRANSFER gs_zip_bin TO gv_arname.
                CLEAR gs_zip_bin.
              ENDLOOP.
              CLOSE DATASET gv_arname.
           endif.
The file get moved successfully. However, when I download the file on to my desktop and when I unzip it, it gives an error message "Cannot open the file; it does not appear to be a valid archive'.
I also notice that there is a size difference between the original and the archived file as in the picture below.
I tries using the SCMS_UPLOAD and SCMS_DOWNLOAD function modules to achieve this and it works perfectly.
However, I did not find any documentation for these function modules and I am not sure if I can use them. I intend to run this program in the background mode.
Any help will be greatly appreciated.
Thanks,
Ajith Cheruvally

Answer 1

Fixed it: Delete preferences.
First, I was wary about deleting preferences because I used EasyFind to search for "textedit" and found many files in different folders throughout the OS and user folders.  I feared deleting the wrong thing.
So with the EasyFind window open with the search results sorted by date last changed, I opened TextEdit and then its preferences and made a minor change, saved it and then closed the app.
I then ran EasyFind again sorting by date last changed and the top two items were the only preference files that were changed.  Deleted those two and now all is well.
EasyFind is freeware found in the App store.  It's invaluable.  I use it often.