My Y flight (IFR to VFR) is invalid

You might see this error:
FPL validation failed
ERRORS:
(R)ROUTE314: Description: INVALID RFL IN VFR PORTION.

Reason

This is normally due to incorrect flight level before the transition to VFR, your flight is most probably above FL195.

Solution

Force a descend to below flight level 195 (FL150) before transition to VFR portion. In above example go one waypointg back and insert /N0180F195 just after point ODNEV, so it is ODNEV/N0180F195 and the flight is valid.