Documents Needed for MRN Closure — Complete Checklist for Exporters

One of the most common questions we receive from exporters is: “What documents do I need to close my MRN?” The good news is that the requirements are straightforward. In most cases, all you need is the MRN and a booking confirmation. This article provides a complete checklist so you can prepare everything before submitting your filing.

Essential Documents

These are the documents required for every MRN closure, regardless of port or cargo type.

1. MRN Number

The Movement Reference Number is the 18-character alphanumeric identifier assigned to the export declaration. It is the single most important piece of information for MRN closure — without it, nothing can proceed. Your customs agent or broker provides the MRN when the export declaration is filed. You can also find it in your national customs system (e.g., PUESC in Poland, ATLAS in Germany).

Format example: 24PL123456789012E3 — the first two digits indicate the year, followed by the country code, a unique sequence, and a check character.

2. Booking Confirmation

The booking confirmation from the shipping line or freight forwarder links your export to a specific vessel and voyage. It typically contains the booking reference number, container number, vessel name, voyage number, and port of loading. This information is essential for matching the export declaration to the vessel manifest in the port system.

In the absence of a formal booking confirmation, a carrier's shipping instruction or booking receipt can serve the same purpose, provided it contains the required data points.

Supporting Documents (When Needed)

Beyond the two essentials, certain situations call for additional documentation.

Bill of Lading (B/L)

The Bill of Lading becomes particularly important when there has been a vessel change, when the actual sailing details differ from the booking, or when manual verification is required by the customs office of exit. The B/L confirms which vessel actually carried the container, the port of loading, and the date of shipment. A digital copy is sufficient.

Export Declaration (EAD/MRN printout)

The Export Accompanying Document provides the full details of the export declaration: exporter data, consignee, goods description, customs value, and the declared customs office of exit. This is helpful when data discrepancies need to be identified or when the port system cannot automatically match the MRN.

Commercial Invoice

Rarely needed for standard MRN closure, but may be requested by customs authorities in complex cases — particularly when the goods description or value in the export declaration is being queried.

Special Cases: Additional Requirements

Dangerous Goods (DG)

Shipments containing dangerous goods require the IMO Declaration (also known as the Dangerous Goods Declaration or DGD) in addition to standard documents. The IMO Declaration must correctly state the UN number, proper shipping name, hazard class, and packaging group. Any discrepancy between the IMO Declaration and the export declaration can prevent automatic MRN closure.

Temperature-Controlled Cargo

Reefer shipments do not require special documents for MRN closure specifically, but the container type must match between the booking and the export declaration. A mismatch (e.g., dry container declared but reefer shipped) can cause matching failures.

Route Diversions

If the container left the EU through a different port than declared (e.g., declared Hamburg but actually sailed from Rotterdam), a Letter of Indemnity (LOI) procedure is required. This needs: the MRN number, container number, actual vessel and voyage details, actual port of exit, and the Bill of Lading confirming the route. See our article on common reasons for open MRN for more on diversions.

What We Handle vs What You Provide

In practice, for the majority of standard export shipments, you need only two things: the MRN and the booking confirmation. Our team handles everything from port system intervention through to delivery of the CC599C/IE599 confirmation to your inbox.

Quick Checklist Before Submitting

Before submitting your MRN closure request to closemrn.com, verify the following:

1. You have the 18-character MRN from your customs agent.
2. You have the booking confirmation showing the container number, vessel name, and port of loading.
3. The vessel has actually departed the EU port (the MRN cannot be closed before physical export).
4. If DG cargo: you have the IMO Declaration with correct UN numbers and hazard classification.
5. If a vessel change occurred: you have the updated B/L showing the actual vessel.

That is it. No port system account, no customs expertise, no foreign-language correspondence required on your end.

Common Document Issues That Delay Closure

1. Container number mismatch — the most frequent problem. A single transposed digit between the export declaration and the actual container prevents automatic matching. Always double-check the container number against the booking.
2. Wrong vessel name — vessel changes are common in container shipping. If the carrier moved your container to a different vessel, the export declaration still references the original vessel. Updated B/L resolves this.
3. Missing booking reference — some exporters only have the MRN and no booking details. While we can often work with just the MRN, having the booking reference speeds up the process significantly.
4. Incomplete DG documentation — missing or incorrect UN numbers, wrong packaging group, or hazard class mismatches between the IMO Declaration and the export declaration.

FAQ — Documents for MRN Closure

Document requirements may vary depending on the specific port, customs office, and nature of the goods. This article provides general guidance applicable to the majority of containerised sea exports through European ports. Legal basis: Art. 269-274 of Regulation (EU) No 952/2013 (Union Customs Code); Art. 334 of Commission Implementing Regulation (EU) 2015/2447. Updated: March 2026.