California Code, Education Code - EDC § 85283

At the time of giving the notice the county superintendent of schools shall set aside in the funds of each district for a period of 60 days the amount necessary for the payment of the registered orders of the district listed in the notice.  If any registered order is not presented to the county superintendent of schools for payment within 60 days after the notice has been given, and moneys are not available to pay the registered order at the time of presentation, it shall not be approved until money becomes available for that purpose and notice is again given that the county superintendent of schools is ready to pay it.