INS-43002
Leaf nodes cannot be configured as part of this Oracle Flex Cluster configuration.
Cause
Oracle Real Application Cluster 9i Database is configured on this host. Leaf nodes cannot be configured as part of Oracle Flex Cluster configuration, on a host that has 9i Oracle RAC database configured on it.
Action
Configure Oracle Flex cluster without including Leaf nodes. Alternatively, you can configure Oracle Flex cluster with leaf nodes after removing 9i Oracle RAC Database.