Simple  AutoPlan IFR generates a route, validates it using the Eurocontrol IFPS vaidator (CFMUV), interprets any error messages Eurocontrol generates, and excludes the route segments in these error messages from the next attempt.

Automatic AutoPlan IFR can iterate a route for you until it passes CFMU. This usually takes only a few attempts.

Flexible  in case AutoPlan IFR can not interpret a CFMU reply correctly, you can manually specify segments to exclude. You can also configure your own direct legs or custom arrival and departure routes - an important feature for those flying from VFR fields for from fields with procedures established outside of controlled airspace.

Validated  by using this method, your flight plan is validated against the official Eurocontrol validation system.

With AutoPlan IFR, planning a route takes at most a few minutes, not hours.