You can revoke issued certificates to invalidate them before the expiry date.

To revoke a certificate

1. Go to Certificates > Managed Certificates.
   
   
2. Select the PKIaaS Certificates tab.
3. Select a certificate on the grid.
4. Select Actions > Revoke.
5. Select the Reason for Revocation.
   
   
6. Click Confirm.
7. The revoked certificate will disappear from the PKIaaS Certificate grid view because the default filter only displays active certificates. Select Status > Filter >Select All to display also the revoked certificates.