(a) A proof of service that is signed by a person who is required to be registered under Chapter 16 (commencing with Section 22350) of Division 8 of the Business and Professions Code or the person’s employee or independent contractor shall indicate the number assigned to the person by the county clerk pursuant to Section 22355 of the Business and Professions Code.
(b) This section shall become operative on January 1, 2027.