If you have received an invoice from Ferde, it means you did no have a valid AutoPASS agreement at the time of passage through the toll station. If you think you had a valid AutoPASS agreement, contact your tag issuer and find out why the agreement is not active.
On the invoice from Ferde, you will see the date of dispatch, the invoice number and your customer number in the top right corner. Payment details such as KID number, account number, amount for payment and payment deadline are placed in a box on the first page.
On page two you will find the specifications for the invoice, ie which passages it includes. You will first see the period the invoice applies to - and then the registration number of the car.
You can also see the date, time and price of the passages.