2016-09-14 05:31:45,639 [j2ee14_ws,maxpri=10]] [  STANDARD] [                    ] (     internal.async.AgentQueue) ERROR   - Agent ClientImpl #3: UHG-FW-ClientFW-.DailyCheckGroupEligibility encountered an execution error. Restarting after delay.;com.pega.pegarules.pub.context.PRSecurityException: Problems encountered when setting the access group for the queue activity:  possibly out of memory; at com.pega.pegarules.session.internal.async.BatchRequestorTask.run(BatchRequestorTask.java:693); at com.pega.pegarules.session.internal.PRSessionProviderImpl.doWithRequestorLocked(PRSessionProviderImpl.java:989); at com.pega.pegarules.session.internal.PRSessionProviderImpl.doWithRequestorLocked(PRSessionProviderImpl.java:698); at com.pega.pegarules.session.internal.async.BatchRequestorTask.run(BatchRequestorTask.java:537); at com.pega.pegarules.session.internal.async.Agent.queueBatchActivityForAgent(Agent.java:1284); at com.pega.pegarules.session.internal.async.Agent.queueBatchActivityForAgent(Agent.java:1105); at com.pega.pegarules.session.internal.async.AgentQueue.run(AgentQueue.java:683); at com.pega.pegarules.session.internal.async.Agent.runAgentTask(Agent.java:807); at com.pega.pegarules.session.internal.engineinterface.etier.impl.AsyncServant.processAsyncTask(AsyncServant.java:191); at com.pega.pegarules.session.internal.engineinterface.etier.impl.AsyncServant.invoke(AsyncServant.java:151); at com.pega.pegarules.session.internal.engineinterface.etier.impl.EngineImpl._invokeEngine_privact(EngineImpl.java:315); at com.pega.pegarules.session.internal.engineinterface.etier.impl.EngineImpl.invokeEngine(EngineImpl.java:266); at com.pega.pegarules.session.internal.engineinterface.etier.ejb.EngineBean.invokeEngine(EngineBean.java:239); at sun.reflect.GeneratedMethodAccessor76.invoke(Unknown Source); at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37); at java.lang.reflect.Method.invoke(Method.java:611); at com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethod(PRBootstrap.java:348); at com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethodPropagatingThrowable(PRBootstrap.java:389); at com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethodPropagatingException(PRBootstrap.java:411); at com.pega.pegarules.internal.etier.ejb.EngineBeanBoot.invokeEngine(EngineBeanBoot.java:171); at com.pega.pegarules.internal.etier.interfaces.EJSLocalStatelessEngineBMT_f2439d86.invokeEngine(Unknown Source); at com.pega.pegarules.session.internal.engineinterface.etier.mdb.PRAsync.processRequest(PRAsync.java:154); at com.pega.pegarules.session.internal.engineinterface.etier.asynchbeans.AsyncTask.run(AsyncTask.java:63); at com.pega.pegarules.session.internal.engineinterface.etier.asynchbeans.RunnableWrapper.run(RunnableWrapper.java:70); at com.ibm.ws.asynchbeans.J2EEContext$RunProxy.run(J2EEContext.java:269); at java.security.AccessController.doPrivileged(AccessController.java:284); at com.ibm.ws.asynchbeans.J2EEContext.run(J2EEContext.java:769); at com.ibm.ws.asynchbeans.WorkWithExecutionContextImpl.go(WorkWithExecutionContextImpl.java:222); at com.ibm.ws.asynchbeans.ABWorkItemImpl.run(ABWorkItemImpl.java:159); at java.lang.Thread.run(Thread.java:767);Caused by: ;com.pega.pegarules.pub.context.InvalidConfigurationException: No such Access Group: ClientImpl:Agents for thread STANDARD in requestor (B2547A515EB7219C60260DE223F4CEBB0) ;From: (B2547A515EB7219C60260DE223F4CEBB0) ; at com.pega.pegarules.session.internal.authorization.context.GlobalContextCache.getBasicApplicationContext(GlobalContextCache.java:202); at com.pega.pegarules.session.internal.authorization.context.GlobalContextCache.getLocalizedApplicationContext(GlobalContextCache.java:214); at com.pega.pegarules.session.internal.authorization.context.AuthorizationContextManagerImpl.getContext(AuthorizationContextManagerImpl.java:129); at com.pega.pegarules.session.internal.authorization.SessionAuthorization.getContext(SessionAuthorization.java:475); at com.pega.pegarules.session.internal.authorization.SessionAuthorization.getContext(SessionAuthorization.java:450); at com.pega.pegarules.session.internal.authorization.SessionAuthorization.setAvailableAccessGroups(SessionAuthorization.java:524); at com.pega.pegarules.session.internal.authorization.Authorization.setAvailableAccessGroups(Authorization.java:692); at com.pega.pegarules.session.internal.authorization.Authorization.resetForAgent(Authorization.java:387); at com.pega.pegarules.session.internal.async.BatchRequestorTask.run(BatchRequestorTask.java:682); ... 29 more;

In my log file I was getting this issue - what is the reason behind that. Actually I did not understand why it was getting

If any body knows please help me.

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