I've applied the patch from TID 7004308 but am still getting -28 errors when trying to register devices in my zone against a 10.2.1 server. If I try the same client against a 10.2 server it registers fine.

Unable to register with the server at: http://zcm2.cscc.edu.
Service Error. code: -28, message: InternalDataModel exception while
to create/update device: KLCDA5W
com.novell.zenworks.datamodel.exceptions.InternalD ataModelException:
org.hibernate.exception.ConstraintViolationExcepti on: could not updat
[com.novell.zenworks.datamodel.objects.devices.Devi ce#aa875c97cf60414