Planned Maintenance

The list below details any planned disruption to services to the best of our knowledge. Disruption to any of these can impact the performance of Sequoia.

This information can change at very short notice. Unless otherwise specified, all times are local.

Last change to the information on this page: Tuesday 24 Mar 2026 17:21

Service Start time End time Details
ASM Online Services
CCS-UK
CDS Live Service
28/03/2026 20:00 29/03/2026 04:45 Planned outage on to
See message from CDS Live Service
Due to scheduled maintenance the Customs Declaration Service (CDS) will be unavailable to all users from 8 pm Saturday 28th March 2026 until 5:45 am on Sunday 29th March 2026.

This release is being carried out during British Summer Time (BST) clock change

Declarations should not be submitted during the outage period.

Creating, updating, or embarking a goods movement reference (GMR) during this time might be affected.
Only goods with pre-lodged declarations attached to a GMR will be allowed to move using Goods Vehicle Movement Service (GVMS).

For import movements using GVMS, you should check the declaration status and arrive where needed https://www.gov.uk/guidance/manually-arrive-your-goods-in-the-uk.

If moving consignments containing controlled goods with pre-lodged declarations, read the https://www.gov.uk/guidance/list-of-goods-imported-into-great-britain-from-the-eu-that-are-controlled and attend port inspection facilities or inland border facilities for goods to be inspected and released.

Exports should have Permission to Progress (P2P) before travelling.

We apologise for any inconvenience this may cause.
CDS Test Service (TDR)
31/03/2026 08:00 01/04/2026 08:00 Planned outage on to
See message from CDS Test Service (TDR)
Hello,

We are emailing to advise you that the CDS TDR Service will be unavailable from:

• 9am on Tuesday 31st March 2026 until 9am on Wednesday 1st April 2026

There will be a complete outage during this period. Please can you inform your contacts.

Kind regards,
TDR Communications Team
CNS Compass
ICS2
MCP Destin8
NCTS/CTC
Pentant