Northern Ireland movements – important update from 13 April 2026

For customers moving goods between Great Britain or Rest of World and Northern Ireland

From 13 April 2026, some customers may start to see new error messages on their Customs Declaration Service (CDS) declarations. Where this happens, declarations will need to be amended or re‑submitted before goods can move and the declaration can be completed.

This change affects goods that require regulatory licences or certificates issued by another government department, for example:

• CHEDs (animals, plants and plant products)
• Certificates of Inspection (COI)
• FGAS and ODS licences

What you need to know

• There are no changes to how you apply for or receive licences or certificates from DAERA or other agencies
• There are no changes to the CDS declaration process
• However, it is essential that licence and certificate details are entered accurately on the CDS declaration, exactly as shown on the document

If licence data does not match, the declaration will error and placed on hold until it is corrected.

Why this is happening

HMRC will now be including CERTEX validation (the EU Certificate Exchange System) for GB–NI movements. CERTEX automatically checks that licences and certificates:

• Exist
• Match the declaration details
• Have enough remaining quantity

Where these checks fail, CDS will generate an error message.

From 13 April 2026

From this date, HMRC will switch on CERTEX checks for:

• GB–NI movements requiring CHEDs for live animals and plants (100% physical checks)
• COI movements for Rest of World to NI

Customers using TSS or direct CDS routes may therefore see new validation errors if licence details are incorrect.

What you should do now

• Check that licence and certificate references are entered correctly and consistently
• Make sure quantities and commodity details match the licence exactly
• Allow time to amend and re‑submit declarations if errors occur

HMRC has produced a short guide highlighting the most common declaration issues, which is attached.

See Attached Document