N.Y. Civil Practice Law & Rules § 5522
Rule 5522. Disposition of appeal. (a) A court to which an appeal is taken may reverse, affirm, or modify, wholly or in part, any judgment, or order before it, as to any party. The court shall render a final determination or, where necessary or proper, remit to another court for further proceedings. A court reversing or modifying a judgment or order without opinion shall briefly state the grounds of its decision.