California Code, Government Code - GOV § 6599

(a) In an action filed pursuant to Chapter 9 (commencing with Section 860) of Title 10 of Part 2 of the Code of Civil Procedure to determine the validity of any matter of an authority governed by this article, the authority and any interested person shall serve the Attorney General and the Treasurer with a copy of the complaint filed by the respective party by the first day of the publication of summons as required by Section 861 of the Code of Civil Procedure. A court may render no judgment in the matter or grant other permanent relief to any party except on proof of service of the Attorney General and the Treasurer as required by this section.

(b) The Attorney General and the Treasurer are each interested persons pursuant to an action filed pursuant to Chapter 9 (commencing with Section 860) of Title 10 of Part 2 of the Code of Civil Procedure to determine the validity of any authorizing bonds or the issuance of bonds.

(c) Any authority that dismisses a validation action by formal act and withdraws the resolution may not issue bonds to construct, acquire, or finance a public capital improvement, except pursuant to Article 1 (commencing with Section 6500), unless the authority thereafter reauthorizes the issuance of the bonds and thereafter, if applicable, complies with Sections 6586.5 and 6586.7.