Documents listed in section 330-15 must be retained for review by internal, external, and governmental auditors for the periods specified in the records disposition schedules (see Section 320-15). Other documentation developed during the course of financial transactions is considered informational material leading to required certification or documentation otherwise required and need not be retained. The Accounting Office, heads of departments, and Senior Vice President--Administration are responsible for retaining the documents cited in this section. Section 330-40 outlines the procedure for issuing a payment for a vendor invoice and describes the.