ZCC error/exception when trying to navigate to the reference link of startup location at zone level

Location/Network Environment configured as the default for the zone. Clicking on the reference count for the Location or the Network Environment shows a list that includes the Zone name. Clicking on the link for the Zone name at this point generates an error

Error:  Could not determine object type: Unable to determine the service for the object type: Zone
See the ZENworks Control Center log file (zcc.log) for the full stack trace.

zcc.log shows
com.novell.zenworks.datamodel.exceptions.DataModelUsageException: Unable to determine the service for the object type: Zone
    at com.novell.zenworks.datamodel.services.DirectServiceStoreImpl.getServiceName(DirectServiceStoreImpl.java:692)
    at com.novell.zenworks.datamodel.services.DirectServiceStoreImpl.getServiceForObject(DirectServiceStoreImpl.java:405)
    at com.novell.zenworks.core.web.internal.pages.locations.NWEnvReferences.objectLink_ViewDetails(NWEnvReferences.java:202)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.novell.web.controls.WebControl.fireEvent(WebControl.java:1977)
    at com.novell.web.controls.WebControl.fireEvent(WebControl.java:1952)
    at com.novell.zenworks.core.web.objects.ObjectLink.objectNameLink_Command(ObjectLink.java:658)
    at sun.reflect.GeneratedMethodAccessor1361.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.novell.web.controls.WebControl.fireEvent(WebControl.java:1977)
    at com.novell.web.controls.BasePostbackControl.fireCommand(BasePostbackControl.java:462)
    at com.novell.web.controls.LinkButton.raisePostBackEvent(LinkButton.java:276)
    at com.novell.web.controls.Page.raisePostBackEvent(Page.java:1064)
    at com.novell.web.controls.Page.raisePostBackEvents(Page.java:1051)
    at com.novell.web.controls.Page.internalProcessRequest(Page.java:723)
    at com.novell.web.controls.Page.processRequest(Page.java:667)
    at com.novell.zenworks.fw.web.internal.layout.Index.processRequest(Index.java:631)
    at com.novell.web.internal.controls.PageTag.doEndTag(PageTag.java:86)
    at org.apache.jsp.jsp.index_jsp._jspService(index_jsp.java:187)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:342)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
    at com.novell.web.NJWCServlet.serviceImpl(NJWCServlet.java:97)
    at com.novell.zenworks.fw.web.internal.ZENworksServlet.service(ZENworksServlet.java:84)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at com.patchlink.sapphire.web.pages.vulnerability.session.HibernateSessionFilter.doFilter(HibernateSessionFilter.java:75)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:563)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at com.novell.zenworks.tomcat.ZENRequestValve.invoke(ZENRequestValve.java:1293)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Thread.java:662)

This is fixed in version 11.2.3a - see KB 7011295 "ZENworks Configuration Management 11.2.3a - update information and list of fixes" which can be found at https://support.microfocus.com/kb/doc.php?id=7011295