The essential services category includes noncompetitive, routine, and repetitive purchases. Please note that if **terms and conditions are included as a condition of sale, service, or purchase, they must be reviewed and approved by Purchasing prior to release. Submit such orders on an electronic requisition and forward the attachments to Purchasing for final processing. Departments may request payment of these goods and services via P-Card or an encumbrance document.  Unless *exempted (Cannot use departmental P-Card), the Departmental P-Card is the preferred method of payment.Essential services may include but are not necessarily limited to the following: Essential Services List