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 status are ready to use; certificates with Loading status are still being processed by the CDN or didn't load correctly—and may need your attention. If you uploaded a new certificate, Media portal will show the new certificate in Loading status. You current certificate remains active (even though the status says Loading) until your new certificate is ready. When your new certificate is ready, the status will change to Active.
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.