Skip to content

Welcome to the Sequoia Resource Centre

This resource describes the functionality available in Sequoia and brings together everything you should know in order to upgrade to the latest version of Sequoia and get started using the software.

Use the menu to the left to navigate through the pages in this resource. When you have navigated to a page, the table of contents for that page will appear to the right.

If you're unsure of what you're looking for or where to look, type into the search box at the top right of the page.

For full details about ASM and Sequoia visit our website


We are focused on ensuring that our 24/7 software support is always available to keep your Sequoia software functioning correctly and free of technical issues.

For more information on the support we offer, click to access the ASM Service Desk Portal

The more information you give us, the faster we can direct your email to the correct person to help you.

Please note that we cannot advise you on customs procedures, declarations content and compliance issues.

As we can only assist with matters related to the technical support of the Sequoia software, we have listed below parties who may be able to help with other issues.

Service Who can help Contact details
CDS Live declarations HMRC Email:

Include the declaration MRN when raising an issue about a specific declaration.
CDS Test (TDR) declarations HMRC Email:

Include the declaration MRN when raising an issue about a specific declaration.
Tariff Enquiries
HMRC Online enquiry form: Send a question about imports, exports and customs reliefs

Webchat: Speak to an adviser online about general import and export queries.

Phone: 0300 322 9434 or Textphone: 0300 200 3719

Opening times: Monday to Friday: 8am to 6pm
Transit (NCTS) HMRC NCTS Helpdesk, phone 0300 322 7095

CCS-UK Inventory or Messaging CCS-UK Telephone: 0845 607 0096

For Technical queries, email
For Billing queries, email

All CCS-UK badge changes or ceases must be received in writing to either of the above email addresses.
Destin8 MCP Telephone: 01394 600200
CNS Compass CNS Telephone: 02380 799600
Pentant Cuslink Pentant Ltd Pentant
Industry Training BIFA Website -