California Codes, Code of Civil Procedure - CCP, Part 3 — Of Special Proceedings of a Civil Nature, Title 1 — Of Writs of Review, Mandate, and Prohibition, Chapter 2 — Writ of Mandate, Section 1086
The writ must be issued in all cases where there is not a plain, speedy, and adequate remedy, in the ordinary course of law. It must be issued upon the verified petition of the party beneficially interested.
Notes
Requires issuance of the writ when there is no plain, speedy, and adequate remedy in the ordinary course of law, upon a verified petition from a beneficially interested party. The provision states both the lack-of-adequate-remedy condition and the verified-petition requirement without supplying another exception or filing deadline.
Use as reference
Lexinter.net | California Code, Code of Civil Procedure - CCP § 1086 | https://laws.lexinter.net/codes/california/code-of-civil-procedure/part-3/title-1/chapter-2/section-1086