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Table of Contents

  1. Why do I get a <MRN Unknown> response?
  2. Why does the MRN Follow-Up application report a different status than my National Administration?
  3. Who should I contact for further details regarding Transit or a Transit movement?

Why do I get a <MRN Unknown> response?

The following list provides the most common reasons that result in an <MRN Unknown> response: 

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Why does the MRN Follow-Up application report a different status than my National Administration?

For international Transit movements, a number of electronic messages are exchanged over the international proprietary Common Communications Network (CCN) of the European Commission.

The concept of these exchanges is much like that of secure e-mail: the sending National Administration submits the message to its CCN Gateway (comparable to an e-mail outbox), the CCN network transports the message to the CCN Gateway of the destination country and the receiving National Administration retrieves the message from that Gateway (comparable to an e-mail inbox).

It is important to realise that the MRN Follow-Up application can only provide transport details of messages passing through these gateways. The content of the messages is not available to the MRN Follow-Up application.

Quite a few scenarios are possible where a discrepancy can arise between the NCTS movement status in the database of the National Administrations and the MRN Follow-Up application. The most common scenarios are:

The most important reminder is that the data provided by the MRN Follow-Up application is for information only and is binding neither for the Commission nor for the National Administrations concerned.

Important note:

Attention should be drawn to the fact that for the movements that are under the final state 'Control Results Send by Office of Destination', the trader's liability is released only upon the written-off of these movements.

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Who should I contact for further details regarding Transit or a Transit movement?

For all further clarifications and enquiries regarding Transit and NCTS, the Customs Policy, Customs Offices and Transit Movement details you should contact your national Customs Administration.

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