Forum mismatch
A posture mismatch in which a governing standard is stated from authority construing another sovereign's rules, such as federal pleading cases cited for the pleading standard in a state court that applies its own.
First used in Right Law, Wrong Stage
Forum mismatch is the easiest kind to overlook, because the language is so familiar.
Twombly and Iqbal construe Federal Rule of Civil Procedure 8(a)(2). They do not govern pleading in state courts, which construe their own rules. California is a fact-pleading jurisdiction, so a demurrer that argues a complaint is not "plausible," citing Iqbal, imports a federal test into a proceeding governed by a different one.
The mismatch runs in both directions. Twombly retired the Conley "no set of facts" formulation for federal purposes, while several state courts of last resort declined to follow Twombly and kept their traditional standards. The same sentence can be obsolete in one courtroom and controlling in another: currency is a property of a proposition relative to a forum.