java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at java.util.Collections$UnmodifiableCollection.(Collections.java:992)
at java.util.Collections$UnmodifiableList.(Collections.java:1145)
at java.util.Collections.unmodifiableList(Collections.java:1131)
at oracle.iam.connectors.icfcommon.Form.getChildFormFieldValues(Form.java:149)
at oracle.iam.connectors.icfcommon.prov.ProvEvent.handleChildForm(ProvEvent.java:217)
at oracle.iam.connectors.icfcommon.prov.ProvEvent.buildChildFormAttributes(ProvEvent.java:152)
at oracle.iam.connectors.icfcommon.prov.ICProvisioningManager.doUpdateChildTableValue(ICProvisioningManager.java:193)
at oracle.iam.connectors.icfcommon.prov.ICProvisioningManager.addChildTableValue(ICProvisioningManager.java:137)
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.thortech.xl.adapterGlue.ScheduleItemEvents.adpDGLORAADDUSERTOGROUP.ORAADDUSERTOGROUP(adpDGLORAADDUSERTOGROUP.java:113)
at com.thortech.xl.adapterGlue.ScheduleItemEvents.adpDGLORAADDUSERTOGROUP.implementation(adpDGLORAADDUSERTOGROUP.java:58)
at com.thortech.xl.client.events.tcBaseEvent.run(tcBaseEvent.java:197)
at com.thortech.xl.dataobj.tcDataObj.runEvent(tcDataObj.java:2496)
at com.thortech.xl.dataobj.tcScheduleItem.runMilestoneEvent(tcScheduleItem.java:3166)
at com.thortech.xl.dataobj.tcScheduleItem.eventPostInsert(tcScheduleItem.java:707)
at com.thortech.xl.dataobj.tcDataObj.insert(tcDataObj.java:606)
at com.thortech.xl.dataobj.tcDataObj.save(tcDataObj.java:478)
at com.thortech.xl.ejb.beansimpl.tcProvisioningOperationsBean.retryTasks(tcProvisioningOperationsBean.java:4178)
at Thor.API.Operations.tcProvisioningOperationsIntfEJB.retryTasksx(Unknown Source)
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.bea.core.repackaged.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at com.oracle.pitchfork.spi.MethodInvocationVisitorImpl.visit(MethodInvocationVisitorImpl.java:34)
at weblogic.ejb.container.injection.EnvironmentInterceptorCallbackImpl.callback(EnvironmentInterceptorCallbackImpl.java:54)
at com.oracle.pitchfork.spi.EnvironmentInterceptor.invoke(EnvironmentInterceptor.java:42)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at com.bea.core.repackaged.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at com.bea.core.repackaged.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at com.sun.proxy.$Proxy560.retryTasksx(Unknown Source)
at Thor.API.Operations.tcProvisioningOperationsIntfEJB_4xftoh_tcProvisioningOperationsIntfRemoteImpl.__WL_invoke(Unknown Source)
at weblogic.ejb.container.internal.SessionRemoteMethodInvoker.invoke(SessionRemoteMethodInvoker.java:40)
at Thor.API.Operations.tcProvisioningOperationsIntfEJB_4xftoh_tcProvisioningOperationsIntfRemoteImpl.retryTasksx(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at weblogic.ejb.container.internal.RemoteBusinessIntfProxy.invoke(RemoteBusinessIntfProxy.java:85)
at com.sun.proxy.$Proxy214.retryTasksx(Unknown Source)
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 org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at com.sun.proxy.$Proxy554.retryTasksx(Unknown Source)
at Thor.API.Operations.tcProvisioningOperationsIntfDelegate.retryTasks(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at oracle.iam.platform.utils.DMSMethodInterceptor.invoke(DMSMethodInterceptor.java:25)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at com.sun.proxy.$Proxy555.retryTasks(Unknown Source)
at com.thortech.xl.webclient.actions.ResourceProfileProvisioningTasksAction.retryTasks(ResourceProfileProvisioningTasksAction.java:715)
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.thortech.xl.webclient.actions.tcLookupDispatchAction.execute(tcLookupDispatchAction.java:133)
at com.thortech.xl.webclient.actions.tcActionBase.execute(tcActionBase.java:900)
at com.thortech.xl.webclient.actions.tcAction.execute(tcAction.java:213)
at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
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:301)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
at com.thortech.xl.webclient.security.CSRFFilter.doFilter(CSRFFilter.java:76)
at oracle.iam.platform.auth.web.OIMAuthContextFilter.doFilter(OIMAuthContextFilter.java:112)
at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:119)
at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:324)
at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:460)
at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:103)
at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:171)
at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
at oracle.security.am.agent.wls.filters.OAMServletAuthenticationFilter.doFilter(OAMServletAuthenticationFilter.java:265)
at oracle.security.am.agent.wls.filters.OAMValidationSystemFilter.doFilter(OAMValidationSystemFilter.java:133)
at oracle.security.wls.oamagent.OAMAgentWrapperFilter.doFilter(OAMAgentWrapperFilter.java:120)
at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:163)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3730)
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:2273)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2179)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1490)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)

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