HWNEP0132E The unassignment of Volume VolumeID from hostport WWPN failed because the definition for host host name on subsystem Subsystem contains additional hostports WWPNs .
Explanation
The hostport is part of a host definition on the subsystem that contains additional hostports. Unassigning the additional hostports could cause access loss to the volume .
Action
Either specify all hostports of the host definition for unassignment command or change the host definition on the subsystem using the device's element manager.