California Code, Code of Civil Procedure - CCP § 701.070

If a final money judgment has been levied upon and the levying officer has served the judgment debtor under the final money judgment levied upon, the judgment debtor shall make any payments due under the judgment to the levying officer. Payments made to a person other than the levying officer do not discharge the obligation of the judgment debtor under the final money judgment levied upon if the payments are made after the judgment debtor has received notice of the levy.