Cal. Health & Safety Code § 103405

Upon receipt of the application, affidavit, certified copy of the court order and payment of the required fee, the State Registrar shall review the amendment for acceptance for filing, and if accepted, shall file the amendment and shall note the fact of the amendment on the otherwise unaltered original birth certificate. The amendment shall be filed with and become a part of the record to which it pertains, if the original record of birth is on file in the office of the State Registrar.