403.12 - Forbidden: Client certificate is denied access by the server certificate mapper.

This might be because:

The account to which your client certificate is mapped on the Web server has been denied access to this Web site. A Secure Sockets Layer (SSL) client certificate is used for identifying you as a valid user of the resource.

Please try this:

• Please check the URL and try again, or...
• Call Local Link Up support on: 01524 230 250