TopographySurface - There is(are) reference gap(s) between points and facets

[pavelkosykh88]

Good day.

I have a problem creating a TopographySurface from points and facets in Revit 2024.

Preliminary I've checked points and facets via  TopographySurface.IsValidFaceSet() - everything is Ok.

But during the creation I receive an exception - "There is(are) reference gap(s) between points and facets....".

Does anybody know what it means and how to fix it?

[moturi.magati.george]

Hi @pavelkosykh88,

In Revit 2024 TopographySurface class has been replaced with Toposolid. This is pointed out by The Buiding Coder also. TopographySurface.Create() is now depreciated and will be replaced by Toposolid.Create()

https://thebuildingcoder.typepad.com/blog/2023/04/whats-new-in-the-revit-2024-api.html

Note: You can find a good example of using TopographySurface in Revit SDK samples for 2023.