It seems that our conversion for mesh to Revit topography is not working as expected. @jonathon this is the error report shows:
Objects.Geometry.Mesh 827c84badbec20fc0a3c9e8165b2d4a0 Failed
Failed to convert due to unexpected error.
There are no points in the input points set.
Parameter name: points
Conversion to native Revit object failed. Retrying conversion with displayable geometry.
Object is not displayable (is not an instance, has no display value or it was null
We’ll look into it and get back to you once we have a fix. Thanks for reporting it.