The file cannot be saved on the host system. A backup copy has been created locally. You will be prompted to restore from this backup file the next time you open the remote file.
Explanation
Rational Developer for System z has an autosave function
that creates a backup copy of editor files on the local system. This
warning indicates that a backup copy has been created for a file that
could not be saved on the remote system.
Response
No action is required.