List of known invalid IFC practices

From Wiki.OSArch

Bentley OpenBuildings Designer[edit]

Summary Last Verified
IfcSurfaceStyleShading is still exported without an a Transparency attribute, even if an IFC4 export is done. This is technically correct if you check in a pre-addendum version of IFC4, but is not useful to users or updated IFC4 parsers. 2019-05-23