You remove certificates that you do not want to use anymore.
In WorkStation, in the System Tree pane, select the EcoStruxure BMS server you want to configure.
Click the Control Panel tab.
Under Security and Communication , click Security Settings .
Click Certificates .
Expand Certificate settings .
In the server list, select the servers.
Click Manage Certificates .
In the Manage Certificates dialog box, select the certificate you want to remove.
Click the Remove certificate button
Click Close .