It shall be the duty and responsibility of the head of the agency for which appropriations are authorized and of the agency's disbursing officer to:
(1) Be cognizant at all times of the resources available, including applicable fund balances, revenues, and other income, for financing the appropriations authorized by the General Assembly;
(2) See that no obligations shall be incurred which cannot be lawfully discharged from funds appropriated or available from other sources when they become due and payable; and
(3) Not operate the agency during any fiscal year from the then-current fiscal year's available resources at a level of operations that would require for the succeeding fiscal year funds in addition to those already authorized by the General Assembly.