We have employees who book hotel using Concur Travel and they are required to use their corporate credit card or personal credit card to make the payment. When this expense feeds into Concur or the employee creates a Hotel out of pocket expense, what is the best method to confirm if they used Concur Travel versus booking on their own? We are trying to catch employees who book hotel on their own and outside of Concur Travel.

One option I was thinking of was adding a new field to say something along the lines of "Booked using Corporate Travel Agency" and then have "Yes" and "No" as the option. If they select "No", have it required for them to complete a Description field to explain why. But I want to avoid more clicks for our employees....