fwiw in the US you don't need anything special. As long as you have the correct certified equipment (e.g. Garmin GNS530W) you're good to go for LNAV and LPV. (VNAV requires special equipment but is never better than LPV anyway).
RNP approaches are a different story and generally require specific approval both for the aircraft and the pilot.
I have no idea how this is creatively reinterpreted in Europe.