Oracle Message ORA-19578 - end of volume while duplexing to sequential files, backup piece incomplete

ERRORend of volume while duplexing to sequential files, backup piece incomplete
CAUSEAn end of volume (EOV) condition was detected while duplexing to sequential files, and this condition cannot be handled currently.
ACTIONBefore retrying the backup, make sure the backup pieces will fit in the volume, or disable duplexing.