Cal. Code Civ. Proc. § 1346
If any person has erroneously delivered any unclaimed moneys or other unclaimed property to the state or any officer or employee thereof, and the moneys or other property is deposited in, or transferred to, the General Fund, or is held by the Controller or Treasurer in the name of that fund, pursuant to this title, the moneys or other property delivered in error, if cash, shall on order of the Controller, be transferred from the General Fund to the Unclaimed Property Fund, and, if other than cash, the records of the Controller and Treasurer shall be adjusted to show that it is held in the name of the proper account in the Unclaimed Property Fund; and the moneys or other property may be refunded or returned to that person on order of the Controller.
Ca. Civ. Proc. Code § 1346