PRVH-00757
Server pool "{0}" was found configured and is not supported from the target release of the Oracle Clusterware
Cause
The Configuration Verification Utility (CVU) identified the indicated server pool configured, which was not supported by the target release of the Oracle Clusterware.
Action
Ensure that the identified server pool is deleted using 'crsctl delete sp name' command before proceeding to upgrade the Oracle Clusterware home.