Code of Federal Regulations Title 41. Public Contracts and Property Management § 41.301–72.100 What must my travel accounting system do in relation to common carrier transportation?

(a) Authorize the use of cash in accordance with § 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.