The carrot or the stick? This has long been the fundamental question around compliance management. For years, companies tried to mandate policy compliance, only to fall short time and time again. Today’s travel managers are finding success in braiding influence into policy.

Through “preferencing” at the point of sale, pre-trip compliance reports and relevant reminders sent to mobile devices, you can prompt “better-than-policy” behavior, which influences your travelers to stay on mission and on budget -- not only during planning and booking, but throughout the trip itself.  

You may get more info here.