The court has placed the most commonly used forms on line as a resource. Please be advised that the forms detailed below are intended to be a guide.A partition action takes the dispute to the courts. Partition Addendum (840P) A fill-in-the-blanks RJI Partition Addendum. Uncontested Matrimonial RJI (UD-13) A fill-in-the-blanks Uncontested Matrimonial RJI. A partition action is a legal remedy used when coowners of a property cannot come to an agreement on how to divide or manage the property. Our attorneys have a track record of success in dealing with partition actions and real estate litigation. An action for partition is a type of litigation and is an adversarial process. The first step is to identify who must be sued. Each of our deeds is attorneydesigned to meet the requirements of New York law.