This BPPM revision includes the following changes: Delegation of Contractual Authority 10.10 All delegations must come directly from the President. The Office of Business Affairs prepares delegation letters and maintains delegation files. Real Property Management 20.45 This revision describes the functions and responsibilities of the Real Estate Office and Real Estate Council. Interdepartmental Requisition and Invoice (IRI) 70.05 The Controller's Office has updated this section to bring the information into conformance with current practices. Interdepartmental Blanket Requisitions 70.06 The Controller's Office has updated this section to bring the information into conformance with current practices.