California Code, Code of Civil Procedure - CCP § 724.250

(a) An acknowledgment of satisfaction of matured installments under an installment judgment shall be made in the same manner and by the same person as an acknowledgment of satisfaction of judgment and shall contain the following information:

(b) If any amount of child or spousal support provided in a support order has been directed to be made to an officer designated by statute or by the court pursuant to Article 4 (commencing with Section 4200) of Chapter 2 of Part 2 of Division 9 of the Family Code or Chapter 4 (commencing with Section 4350) of Part 3 of Division 9 of the Family Code or any other provision of law and the directive is set forth in the certified copy or abstract of the judgment that was recorded to create the judgment lien on real property, or in a similarly recorded certified copy or abstract of an amended or supplemental order, the acknowledgment of satisfaction of matured installments under the installment judgment is not effective and does not affect the judgment lien unless the acknowledgment is executed by or approved in writing by the designated officer.