Hi all,

This is just a general question for an issue that I've run into quite a few times...

Sometimes when I try to add a Coincident mate b/t two flat faces, I get an error message saying that the mate couldn't be solved because the faces aren't parallel. Given that making faces parallel is a big part of what such a mate does, is this an indication that there are other mates preventing the new one from being fulfilled? Or...otherwise, potentially...?

If so, how might I identify the problem mate(s) in question?

FOR REFERENCE, IN ATTACHED...

-"SUBASSEMBLY Back" file, "Coincident32" mate.