I am transforming an IFC file to CityGML to upload the CityGML model to the 3DCityDB. I used the workspace published by Liz (https://support.safe.com/hc/en-us/articles/25407718003341-BIM-to-GIS-Intermediate-IFC-LOD-300-to-LOD-4-CityGML). The CityGML file created looks fine in the FME inspector. However, when I try to import the CityGML into the database, I get a lot of errors saying, “Failed to resolve XLink reference”. I was doing some research, and it seems the problem is that 3DCityDB does not support a gml:MultiGeometry with different dimensions (This is what they mention in the GitHub: In general, a gml:MultiGeometry is a collection of geometries that are allowed to have mixed dimensions: points (0D), curves (1D), surfaces (2D) and solids (3D). The 3DCityDB can handle geometries of different dimensions and collections of geometries having the same dimension. But collections containing geometries of different dimensions are not supported.). Is there a way I can modify the FME workspace to avoid the creation of gml:MultiGeometry? (This is what 3DCityDB recommends: Avoid using gml:MultiGeometry. Use the following collection geometries instead: gml:MultiPoint (0D), gml:MultiCurve (1D), gml:MultiSurface (2D) or gml:MultiSolid (3D).)
Thanks in advance for the support. I am relatively new in FME, so I am a little lost about how to solve this problem
