[Code of Federal Regulations] [Title 41, Volume 4] [Revised as of July 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 41CFR301-72.100] [Page 77] TITLE 41--PUBLIC CONTRACTS AND PROPERTY MANAGEMENT CHAPTER 301--TEMPORARY DUTY (TDY) TRAVEL ALLOWANCES PART 301-72--AGENCY RESPONSIBILITIES RELATED TO COMMON CARRIER TRANSPORTATION--Table of Contents Subpart B--Accounting for Common Carrier Transportation Sec. 301-72.100 What must my travel accounting system do in relation to common carrier transportation? Your system must: (a) Authorize the use of cash in accordance with Sec. 301-51.100 or as otherwise required; (b) Correlate travel data accumulated by your authorization and claims accounting systems with common carrier transportation documents and data for audit purposes; (c) Identify unused tickets for refund; (d) Collect unused, partially used, or downgraded/exchanged tickets, from travelers upon completion of travel; (e) Track denied boarding compensation from employees; (f) Identify and collect refunds due from carriers for overpayments, or unused, partially used, or downgraded/exchanged tickets; and (g) Reconcile all centrally billed travel expenses (e.g. airline, lodging, car rentals, etc.) with travel authorizations and claims to assure that only authorized charges are paid.