Limitation message: The planned altitude is too high. Please adjust the planned altitude or the maximum altitude setting

I try to follow a mapping mission created in ancient.land and imported in Litchi Pilot with my DJI Mini 3. I fly near 120m (113.5m - to have 4cm resolution on ground). When I started the play button in Litchi Pilot and tried to reach point 1 I received the following error message: “The planned altitude is too high. Please adjust the planned altitude or the maximum altitude setting”
Here is the mission: https://flylitchi.com/hub?m=fGggR0nJTw
I tried to change some points altitude with the editor to 70-80-90 meter, but I received the same error message.
I checked and I’m not in a altitude flight restricted area (I’m 1,2km of far from one).
The altitude restriction in Litchi Pilot is set to 120m.
What can be the problem?

ALL altitudes are relative to the take off point.
Especially when using the “Above Ground” feature, your take off point should be at the same level as WP1, the mission assumes WP1 is also your take off point.

If your take off point is more than 6.5m (120-113.5) beneath WP1 and the maximum altitude is set to 120m, you will get this error because the drone then would have climb more than 120m to reach the set altitude of 113.5m above ground at WP1.

This would for instance be the case about 100ft north of WP1, or anywhere between WP1 and the rest of the grid.

Have a look over here:

Thanks for the info and the documentation. This is likely what happened also in my case, since the take off and waypoint 1 had a big (47m) altitude difference. I will try next week another setup, based on the takeoff=WPT 1 criteria.