For shipments to non-EU countries it is mandatory to register certain delivery note lines during the creation of your shipment booking.  Please make sure that you've booked acceptable values for the following fields which are the most common delivery note lines across different carriers:

<quantity>
<description>
<price>
<currency>
<HSCode>
<countryOrigin>

If you are unsure whether your shipment is dutiable, please contact your carrier directly.

Should these checks not solve your issue, please do not hesitate to contact us through this link.