You can regenerate a CSR for a certificate if you need to update your certificate information with your certificate signing authority. If also you need to re-upload a certificate or private key, or change a private key password, you can replace a certificate to make the necessary changes rather than adding a new certificate.
From the lists, select the access group and SCID (service component ID) you want to work with.
Click Manage Certificates.
Media portal lists the certificates associated with the SCID you selected. Certificates in active state are ready to use; certificates with other states may need your attention or may still being processed. Use the section below to learn more about certificate states, click the section below.
On the row for the certificate where you just generated the CSR, click the Regenerate CSR link.
Media portal displays the CSR details for the certificate you selected.
Make any changes to the CSR information (common name, organization, location, etc.)
When you're done, click Submit.
If the request is successful, Media portal gives you a CSR in .pem format for you to download or copy so you can provide the updated information to your certificate authority.