As a foreigner, I thought of passe-partout according to Collins Dictionary : that which

passes or allows passage everywhere. The problem

is that you want a positive word but you can use a negative word as well. What doesn’t make it “pas passe-partout”, which would be a good expression, especially in French. But more something like inapplicable or non-applicable.

Webster’s New World College Dictionary, 3rd Edition. Copyright 2002 by Houghton Mifflin Harcourt. 2010. All rights reserved.