Error updating a Human Task in BPEL

Question

Hi,
I have a requirement where in i need bpeladmin to update a task assigned to some group.
While doing so ,as task is assigned to group i first acquire the task and then perform update on the task
While performing updation i am getting following
Invalid action on workflow task.
Action UPDATE on task a7a61c38dd54a6cb:d9506a8:121a07d45ee:-7aa7 is not valid because of .
Contact oracle support if error is not fixable.
at oracle.bpel.services.workflow.task.impl.TaskService.performPreActionValidation(TaskService.java:3416)
at oracle.bpel.services.workflow.task.impl.TaskService.performPreActionValidation(TaskService.java:3440)
at oracle.bpel.services.workflow.task.impl.TaskService.addComment(TaskService.java:617)
at oracle.bpel.services.workflow.task.impl.TaskService.addComment(TaskService.java:639)
at oracle.bpel.services.workflow.task.ejb.TaskServiceBean.addComment(TaskServiceBean.java:167)
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:585)
at com.evermind.server.ejb.interceptor.joinpoint.EJBJoinPointImpl.invoke(EJBJoinPointImpl.java:35)
at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
at com.evermind.server.ejb.interceptor.system.JAASInterceptor$1.run(JAASInterceptor.java:31)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at com.evermind.server.ThreadState.runAs(ThreadState.java:622)
at com.evermind.server.ejb.interceptor.system.JAASInterceptor.invoke(JAASInterceptor.java:34)
at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
at com.evermind.server.ejb.interceptor.system.TxRequiresNewInterceptor.invoke(TxRequiresNewInterceptor.java:52)
at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
at com.evermind.server.ejb.InvocationContextPool.invoke(InvocationContextPool.java:55)
at com.evermind.server.ejb.StatelessSessionEJBObject.OC4J_invokeMethod(StatelessSessionEJBObject.java:87)
at TaskServiceBean_RemoteProxy_68d4144.addComment(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.evermind.server.rmi.RmiMethodCall.run(RmiMethodCall.java:53)
at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
at java.lang.Thread.run(Thread.java:595)
Caused by: ORABPEL-30036
Invalid action on workflow task.
Action UPDATE on task a7a61c38dd54a6cb:d9506a8:121a07d45ee:-7aa7 is not valid because of The task has been acquired by some other user..
Contact oracle support if error is not fixable.
at oracle.bpel.services.workflow.task.impl.TaskService.performPreActionValidation(TaskService.java:3408)
... 32 more
exception is ORABPEL-30036
Invalid action on workflow task.
Action UPDATE on task a7a61c38dd54a6cb:d9506a8:121a07d45ee:-7aa7 is not valid because of .
Contact oracle support if error is not fixable.
When i check wftask table in database , acquiredby column it shows entry as bpeladmin
Following is the code snippet that i am using to perform the task
Task objTask=wfSvcClient.getTaskService().acquireTask(wfCtx,"a7a61c38dd54a6cb:d9506a8:121a07d45ee:-7aa7");
     objTask=wfSvcClient.getTaskService().addComment(wfCtx, "a7a61c38dd54a6cb:d9506a8:121a07d45ee:-7aa7", "abc123");
     List assigneeGroupLst=objTask.getSystemAttributes().getAssigneeGroups();
     String assigneeGroup=null;
     if(null!=assigneeGroupLst && assigneeGroupLst.size()>0){
          assigneeGroup=((IdentityType)assigneeGroupLst.get(0)).getId();
     SystemMessageAttributesType sysAttr=objTask.getSystemMessageAttributes();
     sysAttr.setProtectedTextAttribute1(assigneeGroup);
     wfSvcClient.getTaskService().updateTask(wfCtx, objTask);
The context created is for user BPELAdmin user.
Do i need to give any rights to bpeladmin? Or is there some other way of doing it.
Any help appreciated !!!
Regards,
Bhavik

Answer 1

Hi Anirudh,
Thanks for quick reply.
I have a requirement where based on certain condition i need to update the task and reassign it.
There is a batch that runs and performs the task. While doing so i dont have any info as to whom
the task is assigned.
So i am using bpeladmin to perform the task.
If task is assigned to user and i try to update the task using bpeladmin then am able to do so.
But if the task is assigned to Group i am getting the error. If task is assigned to user, i am able to
acquire the task but not able to update the task.
While updation it shows the task has been acquired by some other user.
Is there any other way by which i can implement the same ?
Regards,
Bhavik