Section 55, The Public Financial Management Act, 2016

(1) No payment shall be made pursuant to anappropriation under an Appropriation Act, unless a warrant authorizing expenditures to be charged against the appropriation has been issued by the Minister to a head of a budgetary agency. (2) A warrant of the Minister issued under subsection (1) has no effect to the extent to which it purports to authorise the payment for which there is no available appropriation under an Appropriation Act.