Can I figure out if a material use a particular additional map?

bitinn

Sometimes I want to skip baking thickness map if it's not needed, but I am never quite sure if a material (or a smart material) use it or not.

Is there a way to figure it out definitively in Substance Painter?

Jerc

There is no easy way, no. That being said, thickness is very rarely used, especially since we don't yet support sub-surface scattering properly. I think it may be only used in some skin smart materials.