I was doing a shoot at a glider field with my Phantom 4 Pro V2+ that required an altitude of 400' to get what was needed. I set up waypoints and when I tried to upload the mission to the aircraft it told me the drone was too high. I can't find any specification within DJIs information that would indicate there is an altitude limit (other than legal limits) restrictions to waypoint missions. Anyone have an answer to this one? Thanks!