Component can’t reach plant

A recipe needs a component at a plant, but the component cannot get there: there is no supply of it at the plant, no lane carrying it in, and no recipe making it there. When this blocks demand that must be met, the run stops; otherwise it is a warning that this production option can never run.

What to do

Add supply of the component at the plant, a lane that carries it there from a location that has it, or a recipe that makes it at the plant.

Where it comes from

Shown by Network Optimization. It is one of the messages about the scenario.