The "Cluster Group" contains one or more resources that are not recommended to be in the group. This group is used for management ...

The "Cluster Group" contains one or more resources that are not recommended to be in the group.  This group is used for management of the cluster and it is not recommended to add any other resources to this group.  The following is a list of resources that are not required for failover cluster manager and therefore not recommended to be in this group: {0}.