January 15, 2020 18:21 Updated Follow No, this is an option, not a requirement. Related articles Can payroll be encumbered? Will a Purchase Order work for an encumbrance? What do we do if there is an unpaid contract and appropriation has been used? What is needed for payment of credit card charges? Is it 10 calendar days or 10 business days as code says 10 days for public notice of proposed additional appropriations?