I'm trying to use the Deconstruction Marker to expand the subsurfaces in my game. However, while I can mark a region for deconstruction, I am only getting the response that I'm missing the materials for construction. Is there something I'm missing?

I'm playing with all of the bob-angels mods, if that might affect this.

Unfo that's an engine limitation. You don't need materials for the floor, it is generated when walls are dug

Ah, so the Deconstruction Marker doesn't actually make the bots do it for you?

It does, but the walls, not the floor.
You can see this behaviour when the area you marked overlaps with an area that is already cleared

Thanks for your help. Figured out that I was just missing the cliff explosives tech :d

I really should add a tips-and-tricks entry for that😅