Terrain tile error ( neighbor )

Unity Engine
1

Getting this error:
Bottom neighbor of the terrain has a different heightmap resolution. Stop neighboring.
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr) ,I also get one just like this, just with 'TOP" instead.

I do have a rather small tile, so ya its a different size, not allowed ?

Gameplay isn’t affected, so why error and does it matter ?

Thx

2

I think that the terrains can have different dimensions (Terrain Width, Length and Height). I was able to get the error to go away by making fields “Detail Resolution Per Patch” and “Detail Resolution” (which are right below Terrain Width, Length and Height) match.