Quantities issue for materials with "no material in Revit"

Some quantities are not visible in RTLCA after material transfer from Revit. Specifically Revit materials with no material assigned, i.e. “By Category”.
Is this a new thing (bug) or it always was like this and “suppose” to be ?
Obviously I need to calculate LCA for these materials as well.

Hi @Julian3000

This is a limitation in the Revit API and we therefor ask you to assign a material to that layer.
For elements with just one layer and for that single layer we are able to report the quantities - in this case we name it Unknown in Real-Time LCA.

Br
Martin