vinayak Bhadage [https://community.jboss.org/people/vinayakpict] created the discussion "which JMS based human task work item handler need to use ?" To view the discussion, visit: https://community.jboss.org/message/810199#810199 -------------------------------------------------------------- hi, I want to user JMSTaskServer as transporter between JBPM 5.4 process engine and TaskClient. Serever is initilized as: Properties serverProperties = new Properties();         serverProperties.setProperty("JMSTaskServer.connectionFactory", "ConnectionFactory");         serverProperties.setProperty("JMSTaskServer.transacted", "true");         serverProperties.setProperty("JMSTaskServer.acknowledgeMode", "AUTO_ACKNOWLEDGE");         serverProperties.setProperty("JMSTaskServer.queueName", "tasksQueue");         serverProperties.setProperty("JMSTaskServer.responseQueueName", "tasksResponseQueue");             try {             this.server = new JMSTaskServer(taskService, serverProperties, new InitialContext());         } catch (NamingException e1) {             e1.printStackTrace();         }             thread = new Thread(server);         thread.start();   The Task client for JMS is as :   public static TaskService getTaskClient() {               Properties clientProperties = new Properties();           clientProperties.setProperty("JMSTaskClient.connectionFactory", "ConnectionFactory");           clientProperties.setProperty("JMSTaskClient.transactedQueue", "true");           clientProperties.setProperty("JMSTaskClient.acknowledgeMode", "AUTO_ACKNOWLEDGE");           clientProperties.setProperty("JMSTaskClient.queueName", "tasksQueue");           clientProperties.setProperty("JMSTaskClient.responseQueueName", "tasksResponseQueue");           TaskService client = null;           try {               client = new SyncTaskServiceWrapper(new TaskClient(new JMSTaskClientConnector( UUID.randomUUID().toString() + "WSThroughJMSHumanTaskHandler" , new JMSTaskClientHandler(                         SystemEventListenerFactory.getSystemEventListener()), clientProperties, new InitialContext())));           } catch (NamingException e) {               e.printStackTrace();           }               return client;     }     When I do the TaskSummary look up it works fine. But when i start the new process instance which having human task it fails. so which human task work item handler need to use. I have tried below but does not work        CommandBasedHornetQWSHumanTaskHandler wsHumanTaskHandler = new CommandBasedHornetQWSHumanTaskHandler(knowledgeSession);        wsHumanTaskHandler.setClient(getTaskClientInstance());        wsHumanTaskHandler.setConnection("127.0.0.1", 5445);         knowledgeSession.getWorkItemManager().registerWorkItemHandler("Human Task", wsHumanTaskHandler);   This is CommandBasedHornetQWSHumanTaskHandler deprecated class but I have no clue which one need use. It is giving following error : Caused by: java.lang.RuntimeException: Error creating message         at org.jbpm.task.service.jms.JMSTaskClientConnector.write(JMSTaskClientConnector.java:152) [jbpm-human-task-jms-5.4.0.Final.jar:5.4.0.Final]         at org.jbpm.task.service.TaskClient.registerForEvent(TaskClient.java:623) [jbpm-human-task-core-5.4.0.Final.jar:5.4.0.Final]         at org.jbpm.task.service.hornetq.CommandBasedHornetQWSHumanTaskHandler.connect(CommandBasedHornetQWSHumanTaskHandler.java:103) [jbpm-human-tas k-hornetq-5.4.0.Final.jar:5.4.0.Final]         at org.jbpm.task.service.hornetq.CommandBasedHornetQWSHumanTaskHandler.executeWorkItem(CommandBasedHornetQWSHumanTaskHandler.java:111) [jbpm-h uman-task-hornetq-5.4.0.Final.jar:5.4.0.Final]         at org.drools.persistence.jpa.processinstance.JPAWorkItemManager.internalExecuteWorkItem(JPAWorkItemManager.java:55) [drools-persistence-jpa-5 .5.0.Final.jar:5.5.0.Final]         at org.jbpm.workflow.instance.node.WorkItemNodeInstance.internalTrigger(WorkItemNodeInstance.java:107) [jbpm-flow-5.4.0.Final.jar:5.4.0.Final]             at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:126) [jbpm-flow-5.4.0.Final.jar:5.4.0.Final]         ... 42 more Caused by: java.lang.NullPointerException         at org.jbpm.task.service.jms.JMSTaskClientConnector.write(JMSTaskClientConnector.java:126) [jbpm-human-task-jms-5.4.0.Final.jar:5.4.0.Final]         ... 48 more   Please help me .... Thanks & regards, -vinayak -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/810199#810199] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]