If the trip is found via the order reference, the invoice management system checks for any disparity between the invoice amount and the trip booking amount in the Travel database. The tolerance can be configured by means of the Billing Tolerance Rules in the Administration tool. Tolerances can be configured individually for services and for agency fees, and can be based on any combination of date range, location, service type and cabin class.
If a disparity does not fall within the tolerance range, the over-charged amount is highlighted in the list of invoices waiting to be processed.
You can choose to designate such an invoice as "Disputed" - see Disputing an Invoice.