Excpetion while customizing task name in task list section

Hi,
We are getting following exception when we are customizing(rename) a task-flow name under task-list section of UI-shell page.
When we apply and save the change, we get below exception in logs, though the changes are applied.
Exception says element attribute is having null value.Any idea where can we sett attribute value.
This message may be avoided by performing initADFContext before using getCurrent().
To see the stack trace for thread that is initializing this, set the logging level of oracle.adf.share.ADFContext to FINEST
<LifecycleImpl> <_handleException> ADF_FACES-60098:Faces lifecycle receives unhandled exceptions in phase INVOKE_APPLICATION 5
oracle.mds.exception.MDSRuntimeException: MDS-00173: Attribute value of element attribute in document /mdssys/sandbox/SLUIShell-ViewController-context-rootSLfacesSLIndexWCSEPadmin1WCRAN960143241/WEB-INF/menus/mdssys/cust/Site/SITE/Index_taskmenu.xml.xml has a null value.
     at oracle.mds.internal.persistence.db.shredded.DocumentParser.startElementAttrs(DocumentParser.java:1063)
     at oracle.mds.internal.persistence.db.shredded.DocumentParser.startElement(DocumentParser.java:330)
     at oracle.mds.internal.persistence.db.shredded.ShreddedReposAccess.tourDocument(ShreddedReposAccess.java:1090)
     at oracle.mds.internal.persistence.db.shredded.ShreddedReposAccess.tourDocument(ShreddedReposAccess.java:1091)
     at oracle.mds.internal.persistence.db.shredded.ShreddedReposAccess.tourDocument(ShreddedReposAccess.java:1091)
     at oracle.mds.internal.persistence.db.shredded.ShreddedReposAccess.createDocumentParser(ShreddedReposAccess.java:1066)
     at oracle.mds.internal.persistence.db.shredded.ShreddedDBMSConnection.createDocumentParser(ShreddedDBMSConnection.java:400)
     at oracle.mds.internal.persistence.db.BaseDBMSConnection.createDocWithComment(BaseDBMSConnection.java:729)
     at oracle.mds.internal.persistence.db.BaseDBMSConnection.createStoreDocument(BaseDBMSConnection.java:690)
     at oracle.mds.persistence.DelegatingMetadataStoreConnection.createStoreDocument(DelegatingMetadataStoreConnection.java:260)
     at oracle.mds.internal.persistence.BufferedMSConnection.createStoreDocument(BufferedMSConnection.java:273)
     at oracle.mds.persistence.MetadataStoreConnection.createDocument(MetadataStoreConnection.java:293)
     at oracle.mds.persistence.PTransaction.createDocument(PTransaction.java:498)
     at oracle.mds.internal.persistence.sandbox.SandboxPTransaction.createDocumentInternal(SandboxPTransaction.java:1248)
     at oracle.mds.internal.persistence.sandbox.SandboxPTransaction.createDocument(SandboxPTransaction.java:257)
     at oracle.mds.core.UpdateableMOContent.createPDocument(UpdateableMOContent.java:1504)
     at oracle.mds.core.UpdateableMOContent.saveMOContent(UpdateableMOContent.java:1074)
     at oracle.mds.core.MDSTransaction.flushChangesToPTrans(MDSTransaction.java:838)
     at oracle.mds.core.MDSTransaction.internalCommit(MDSTransaction.java:2884)
     at oracle.mds.core.MDSSession.flushChanges(MDSSession.java:1043)
     at oracle.mds.core.MDSSession.flushChanges(MDSSession.java:871)
     at oracle.adf.controller.v2.lifecycle.PageLifecycleImpl.metadataCommit(PageLifecycleImpl.java:517)
     at oracle.adf.controller.v2.lifecycle.Lifecycle$8.execute(Lifecycle.java:213)
     at oracle.adfinternal.controller.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:197)
     at oracle.adfinternal.controller.faces.lifecycle.ADFPhaseListener.access$800(ADFPhaseListener.java:23)
     at oracle.adfinternal.controller.faces.lifecycle.ADFPhaseListener$4.after(ADFPhaseListener.java:349)
     at oracle.adfinternal.controller.faces.lifecycle.ADFPhaseListener.afterPhase(ADFPhaseListener.java:75)
     at oracle.adfinternal.controller.faces.lifecycle.ADFLifecyclePhaseListener.afterPhase(ADFLifecyclePhaseListener.java:53)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:399)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:186)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
     at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.webcenter.framework.events.dispatcher.EventDispatcherFilter.doFilter(EventDispatcherFilter.java:44)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:205)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:106)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:446)
     at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:446)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:271)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:177)
     at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.adf.view.page.editor.webapp.WebCenterComposerFilter.doFilter(WebCenterComposerFilter.java:109)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.apps.fnd.applcore.common.ApplSessionFilter.doFilter(ApplSessionFilter.java:653)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.wcps.client.PersonalizationFilter.doFilter(PersonalizationFilter.java:75)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.webcenter.content.integration.servlets.ContentServletFilter.doFilter(ContentServletFilter.java:168)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.adf.library.webapp.LibraryFilter.doFilter(LibraryFilter.java:175)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:111)
     at java.security.AccessController.doPrivileged(Native Method)
     at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:313)
     at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:413)
     at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:94)
     at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:161)
     at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:136)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
     at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2277)
     at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183)
     at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:176)
<RegionRenderer> <encodeAll> The region component with id: pt1:pePanel:0:peDiReg:1:comppir3 has detected a page fragment with multiple root components. Fragments with more than one root component may not display correctly in a region and may have a negative impact on performance. It is recommended that you restructure the page fragment to have a single root component.
<RegionRenderer> <encodeAll> The region component with id: pt1:USma has detected a page fragment with multiple root components. Fragments with more than one root component may not display correctly in a region and may have a negative impact on performance. It is recommended that you restructure the page fragment to have a single root component.

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