21WLBSWLBS : host 1 does not have the same number or type of port rules as this host. Please check WLBS Setup dialog on all machines that belong to the cluster and make sure that they all contain the same number and the same type of port rules.
This error occurs if the configuration of two hosts inside a WLBS cluster doesn't match.
Make sure that you compare the configuration of host with the mentioned id (1 in this case) with the one from the host where the message is logged.