workshop_jobs.xml declares <require_multiple_gameobjects input="planks" amount="6" use_multiplier="1" range="100" tag="planks" failure_reason="Requires available glass." closest="1" require_owned="1"/> <require_multiple_gameobjects input="glass_panes" amount="3" use_multiplier="1" range="100" tag="glass_panes" failure_reason="Requires available glass." closest="1" require_owned="1"/> buildings.xml declares <require_commodity_geq name="bricabrac" amount="10" failure_reason="10x Bric-a-brac needed" is_cost="1" /> Only one of them can be right