What must a CO verify about funds before certifying a payment?

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The key idea is ensuring that money is genuinely available and properly controlled for the specific payment. Before certifying, the certifying official must verify three things: funds are available for the transaction, funds are properly apportioned to that transaction, and the period of availability matches the obligation. This combination prevents overspending, ensures funds are being used for the intended purpose, and confirms the payment is made within the time frame the appropriation allows. Simply finding funds in the general ledger isn’t enough because those funds could be already obligated or not actually available for this purpose. Just assigning the payment to the correct account code matters, but without showing availability and correct apportionment within the right period, certification isn’t legally sound. A sunset clause in a contract, on the other hand, isn’t about funding authorization and doesn’t address whether funds are available or properly apportioned.