What is an MRN (Movement Reference Number)?

Definition:
A Movement Reference Number (MRN) is a unique reference assigned to a customs declaration when goods are entering, leaving, or moving within the European Union (EU) under customs procedures. It serves as proof that a customs transit, import, or export declaration has been lodged.

Format:

• Usually an 18-character alphanumeric code, e.g., 19GB12345678901234.

Purpose:

• Tracks the movement of goods in customs procedures.

• Acts as proof that customs formalities have been initiated.

• Enables customs authorities to monitor and control goods in transit.

When is an MRN obtained?

1. Before goods are transported:

   • When filing a customs declaration (export, import, or transit), the MRN is generated once the declaration is accepted.

2. For transit procedures (T1/T2 in the EU):

   • Confirms that goods are under customs supervision while moving between countries.

3. For exports from the EU:

   • Issued when the export declaration is accepted, often needed to prove export for VAT or tax purposes.

Where to find the MRN

1. Customs Declaration (Electronic)

   • Generated once the import declaration is accepted in the Automated Import System (AIS).

   • Included in the declaration acknowledgment sent by customs.

   • Format: 18 characters, e.g., 18GB12345678901234.

2. From your Customs Broker / Freight Forwarder

   • Provided if a broker submits the declaration on your behalf.

   • Found on:

     • Customs release confirmation

     • Proof of import documents (PDF or printout)

3. Transit Documents

   • For shipments under T1/T2 transit, the MRN appears on the electronic transit declaration.

   • The carrier or forwarder can provide this document.

4. Official Customs Notification / PDF

   • Most EU countries provide a PDF or electronic acknowledgment with:

     • MRN

     • Customs office of entry

     • Declaration type

     • Goods summary

Why upload the MRN to ASNs delivered to the warehouse?

The MRN proves that customs has accepted the import declaration. Attaching it to your Advanced Shipping Notice (ASN) helps the warehouse in several ways:

• Customs Compliance: Confirms the shipment is legally released or in transit under customs control.

• Audit and Record Keeping: Warehouses must keep MRNs for tax, customs, or regulatory audits. Missing MRN info can lead to goods being held or even seized during an audit.

• Inventory Tracking & Traceability: Linking the MRN to the ASN ensures each shipment in the WMS can be traced back to the customs declaration, preventing mismanagement or compliance issues.

In short:
Uploading the MRN proves to the warehouse that customs clearance is in place, allows legal processing of goods, and maintains proper audit trails. Without it, the warehouse may refuse to receive the shipment or place it in quarantine.

How to add MRN information to ASNs

• Add the MRN in the comments section of the ASN.

• You can also upload CDS (Customs Declaration System) documents as supporting attachments.