An unused ticket credit is created when a previously purchased airline ticket (or a portion of it) is not used as a result of a change or cancellation. The value of the ticket is retained by the University's contracted travel agency as a credit that can be applied toward a future business travel, subject to airline rules, expiration dates, and fare restrictions.
An airline Miscellaneous Charges Order (MCO) is a credit issued by an airline for a specific dollar amount that is not tied to a specific unused ticket. MCOs are commonly created as the result of ticket exchanges, cancelled flights, or fare adjustments. MCOs can only be processed, tracked, and applied toward future business travel by the contracted travel agency [https://busfin.osu.edu/buy-sell-travel/travel/contact-travel-agent] that originally issued the MCO. Travelers cannot use MCOs directly with the airline.
Both unused ticket credits and MCOs are subject to airline restrictions and expiration dates and must be managed in accordance with the University Travel Policy. Travelers should contact the University's contracted travel agency for assistance with applying either type of credit.