3821492 - When attempting to change my ticketed itinerary, why did Concur return an internal error advising unable to complete?

When I was attempting to change my ticketed flights in Concur, I had selected the new flights and when I clicked to finalize my selections and confirm the changes, Concur returned an error:

When traveler was attempting to change their ticketed itinerary, an internal error returned advising unable to complete but all reservations so far have been retained. , KBA , CON-CA , Cross Applications , CON-SRV-TRV-ADM-LAN , View Airlines , Problem