Get event action failed. java.security.cert.CertificateException: The required certificate doesn't exist in the key store.

This error comes if your event subscription username and password aren’t filled in. You may see this error if right click on the IPS in IME and click status. The connection status should read OK. Update your IPS by right clicking and click edit and fill in both subscription username and passwords fields. Hope this will help ya solve this problem since it doesn’t seem to have anything to do with a certificate.