What UK–EU RoRo operators must do now. From 20 April 2026, every truck crossing the French Smart Border with the United Kingdom — whether loaded or empty, in either direction — must present a single barcode known as the Obligatory Logistics Envelope (ELO). Operators who arrive without a valid, closed ELO risk being directed to the orange lane for physical customs checks.
The Obligatory Logistics Envelope is a digital aggregation tool developed by the French Directorate General of Customs and Indirect Taxes (DGDDI) as part of the French Smart Border regime governing UK–EU freight movements. Its purpose is straightforward: to consolidate under a single reference all of the declarative formalities that apply to a given transport unit crossing the border between France and the United Kingdom. Rather than relying on individual document checks at multiple points, French Customs can scan one barcode and verify in real time that every required declaration is in place, correctly filed, and in good standing.
The ELO is accessed and created through a nominative account on douane.gouv.fr, the French Customs portal. It is available free of charge. Once created, the ELO is closed by the operator after all relevant declaration references have been entered; this triggers automated verification of the status of each declaration. The system then generates a PDF document bearing the ELO barcode, which the driver presents at the crossing infrastructure at the ticketing or “pairing” stage.
| ⚠️ Important Restriction: Once the barcode has been scanned at pairing, neither the ELO nor the declarations linked within it can be modified. The ELO applies to all roll-on/roll-off traffic, including accompanied and unaccompanied transport units, and to both loaded and empty vehicles. Each transport unit may have only one ELO. |
Free of charge Accessed via douane.gouv.fr with a nominative account Voluntary since 28 April 2025 Mandatory from 20 April 2026 Account suspension risk False or incomplete information may result in DGDDI terminating platform access One ELO per transport unit Loaded, empty, accompanied or unaccompanied Immutable at pairing No modifications after the barcode is scanned ICS2 ENS only ICS1 declarations cannot be integrated into the ELO |
When a truck is loaded, the ELO must group all the EU-side formalities necessary for crossing the Smart Border. For goods moving in the UK-to-EU direction, this includes EU import declarations, transit declarations, export declarations, and — of central importance to those operating in the UK customs space — the ENS filed via ICS2 along with its Movement Reference Number.
UK formalities — specifically the Goods Movement Reference (GMR) generated under the UK’s GVMS system — are not included in the ELO. Those remain a separate UK obligation. The ELO is purely an EU-side instrument.
| 🚨 Critical Compliance Point: French Customs is unambiguous: only ICS2 Entry Summary Declarations — not ICS1 — can be integrated into the ELO. Any operator who has not yet migrated to ICS2 for their UK-to-EU truck movements is now carrying a compounded compliance exposure: they lack both the ICS2 ENS MRN and, by extension, the ability to complete a valid ELO. |
The question of who creates the ELO is deliberately flexible. French Customs specifies that any actor within the logistics chain with the capacity to centralise all the necessary information for the border crossing may create an ELO. This can change from crossing to crossing. In practice, the responsibility will typically fall to one of the following parties:
💡The Upside of the ELO For operators who have their paperwork in order, the ELO creates a cleaner, more predictable crossing process. All formalities are verified before the physical crossing — reducing the likelihood of post-arrival resolution delays that currently affect non-compliant shipments. |
For many UK-based and EU-based operators moving goods by road through French Channel ports, the ICS2 ENS MRN is the filing that connects the entire chain. The ENS must be submitted to the EU’s ICS2 system ahead of the goods being loaded, generating an MRN that confirms the safety and security data has been received and accepted by EU customs. That MRN is then entered into the ELO alongside the other relevant EU customs declaration references.
“A truck cannot cross with a valid ELO if the ICS2 filing has not been completed, because the MRN simply will not exist.” |
Operators approaching this deadline should work through a structured preparation checklist. The priority actions are as follows:
The Customs Declarations UK platform provides a dedicated ICS2 ENS service that enables freight forwarders, hauliers, transport companies, customs agents, and exporters to prepare and submit ENS declarations to the EU’s ICS2 system through an intuitive, guided filing workflow. The platform generates the MRN on acceptance, providing the exact reference that must be carried into the ELO.
Through CDUK’s plain-English, wizard-based workflow, operators can enter all required data elements — consignor and consignee details, commodity descriptions, transport information, routing, and safety and security data — and submit directly to the ICS2 system. Real-time validation checks identify any missing or inconsistent data before submission, reducing the risk of rejections and the delays that follow. CDUK also archives all submission data for the statutory retention period, providing an audit-ready record for any subsequent compliance review.
The ELO’s mandatory enforcement from 20 April 2026 represents the convergence of several EU compliance developments that have been developing across the post-Brexit period. ICS2 has been progressively rolling out across transport modes; the French Smart Border has been operating since Brexit; and the ELO itself has been available in voluntary form for nearly a year. What changes on 20 April is that all of these elements become simultaneously required and simultaneously verified at the point of crossing.
For operators who are already filing ICS2 ENS declarations accurately and in good time, and whose EU customs declaration obligations are being managed compliantly, the ELO adds a co-ordination step rather than a substantive new burden. For those who have not yet established compliant ICS2 ENS filing, the deadline is the prompt to act without further delay.
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