Cal. Civ. Proc. Code § 663a
(a) A party intending to make a motion to set aside and vacate a judgment, as described in Section 663, shall file with the clerk and serve upon the adverse party a notice of his or her intention, designating the grounds upon which the motion will be made, and specifying the particulars in which the legal basis for the decision is not consistent with or supported by the facts, or in which the judgment or decree is not consistent with the special verdict, either: