Cal. Gov. Code § 17272

Registered warrants not bearing a maturity date, and registered warrants bearing a maturity date, but for the payment of which refunding warrants have not been sold or unapplied money is not available on the due date, shall be paid, together with all interest due, at such times as the Controller determines, with the approval of the committee. Upon approval the Controller shall notify the Treasurer of the numbers of the warrants which are to be redeemed.