PowerVault ME4: Unable to add a new host to an existing host group.

Suspect a problem with the wizard not validating the host add to an existing group with mappings.

A few other things we ran into:

* Mapping a host to a host group mapped with volume groups, the wizard displays no volumes.

Follow the below steps manually to successfully add a new host to an existing host group, do not use the wizard :
Can be done either via GUI or CLI :

1. Create initiator. Name the initiator. Repeat this step until all initiators are created for the new host.
From GUI - select hosts > Action > create initiators. From CLI - use the command "create host initiators intiators_IDs hostname"
2. Add these initiators to the host. Name the host.
From GUI - Select the initiators and click "Add to host" from the Action menu. Name the host.
From CLI - Already done in step one.
3. Map the volume/volumes of the host group to the new host. The mappings should be ditto same as the host group including the lun numbers and the port numbers.
From GUI - select "mappings" > Action > Map in GUI
From CLI - use the command - map volume volume_name1 initiator initiator_nicknames ports 0,1,etc lun lun_number
4. Add host to host group.
From GUI - Select the host > action > add to host group. Select the host group from drop-down and click OK.
From CLI - use the command -  "add host-group-members hosts host_name hostgroup_name_to-add-to"