California Code, Code of Civil Procedure - CCP § 912

Upon final determination of an appeal by the reviewing court, the clerk of the court shall remit to the trial court a certified copy of the judgment or order of the reviewing court and of its opinion, if any.  The clerk of the trial court shall file the certified copy of the judgment and opinion of the reviewing court, shall attach that copy to the judgment roll if the appeal was from a judgment, and shall enter a note of the judgment of the reviewing court stating whether the judgment or order appealed from has been affirmed, reversed or modified, in the margin of the original entry of the judgment or order, and also in the register of actions.