What is a MRN?
The MRN number, also known as the movement number, stands for “Movement Reference Number”. This is a unique reference number that is issued for electronic customs declarations within the framework of the Automated Tariff and Trade System (ATLAS).
Most Customs processes generate an MRN. The MRN is proof that the goods have been entered to o Customs and are authorised to move. In simple terms nothing should move without an MRN.