FAQ Why don't I get "Enhanced Carrier Route " rates? Make sure your database has the following fields: Delivery Point, Carrier Route, Line of Travel Number and Line of Travel Order. After inserting these fields by using Database/Modify, format the fields and run your file trough address check. If you have enough pieces you will see the "Enhanced Carrier Route" under the "Mailing "Mailing Results Screen." When you go to run your presort you will see "Enhanced CRRT Automation Basic Letters," and "Enhanced CRRT WS/HD/LOT Letters" under suggested mailings.