Jim B [https://community.jboss.org/people/jamesbeam] created the discussion "IOException while storing process instance?" To view the discussion, visit: https://community.jboss.org/message/809700#809700 -------------------------------------------------------------- Using jBPM 5.4, Hibernate 4, JPA2 I have a rule in which I want to create an object and then start a process with a facthandle to this object as one of the variables.  (FYI, I'm passing the facthandle because I want the process to retract the object I created before it ends.  The issue is that right after my rule fires (right after the output, "started process: 123" - see below) I get the following error: *    java.lang.IllegalArgumentException: IOException while storing process instance 123: org.drools.common.NamedEntryPoint* *    org.jbpm.persistence.processinstance.ProcessInstanceInfo.update(ProcessInstanceInfo.java:207)* If I insert null or a string instead of the fact handle, everything works fine.  MY GOAL:  I am inserting objects into working memory and based upon the object, if a related process already exists, I will send a signal to it, if a related process does not already exist I want to create/start one.  I use a "MarkerBean" to determine whether or not a related process already exists.  When a process ends, it needs to remove the related MarkerBean. The following rule is giving me the exception.  Here, an object (MyEventBean) has been inserted and I am looking to see if there is a corresponding MarkerBean.  Then, I create the process and new markerbean if necessary: rule "TestRule4"   no-loop true   dialect "java" when    $meb: MyEventBean(style matches ".*western.*")    not ($mb : MarkerBean(title matches $meb.getTitle())) then   // first get the fact handle and pass it to the process   MarkerBean $mb = new MarkerBean();   Object factHandle = kcontext.getKnowledgeRuntime().insert($mb);   System.out.println("got object:"+factHandle.getClass().getName());   <=== prints org.drools.common.DefaultFactHandle   java.util.Map<String,Object> variables = new java.util.HashMap<String,Object>();   variable.put("markerHandle",factHandle)   WorkflowProcessInstance pi = (WorkflowProcessInstance)kcontext.getKnowledgeRuntime().createProcessInstance("test.SimpleProcess", variables);   //store the new processinstance in the new MarkerBean (so I can later signal it)   $mb.setTitle($meb.getTitle());   $mb.setProcessInstanceId(pi.getId());   update($mb)   kcontext.getKnowledgeRuntime().startprocessInstance(pi.getId());   System.out.println("started process "+pi.getId()); end For grins I added DefaultFactHandle ( to my persistence.xml, didn't help.  As I mentioned, if I add a plain string rather than the factHandle, everything works. Does anyone see anything here that could be causing a problem? Thanks vm! -J -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/809700#809700] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]