Rule 7019 Federal Rules of Bankruptcy Procedure
Rule 7019 of the Federal Rules of Bankruptcy Procedure is about Required Joinder of Parties. It is under Part VII (Adversary Proceedings) of the Rules.
Fed. R. Civ. P. 19 applies in an adversary proceeding. But these exceptions apply:
(a) if an entity joined as a party raises the defense that the court lacks subject- matter jurisdiction and the defense is sustained, the court must dismiss the party; and
(b) if an entity joined as a party properly and timely raises the defense of improper venue, the court must determine under 28
U.S.C. § 1412 whether to transfer to another district the entire adversary proceeding or just that part involving the joined party.