Hi all,

I am using GReg 4.6.0 and running `Issue Tracker Sample
<https://docs.wso2.com/display/Governance460/Issue+Tracker+Sample>`. After
creating the RXT artifact it is working as expected.

At the last step, it is needed to subscribe for notifications.
<https://docs.wso2.com/display/Governance460/Issue+Tracker+Sample#IssueTrackerSample-SubscribingToNotifications>
I
have added the followings to the $GREG_HOME/repository/conf/*registry.xml*.

<workList serverURL="local://services/" remote="false">
        <username>admin</username>
        <password>admin</password>
</workList>


Finally added subscription with the role `internal/everyone`.

[image: Inline image 2]

But notifications are not seen as expected when changes are done for the
LC. Instead following error trace is shown;

*[2015-02-23 16:31:33,218] ERROR
{org.wso2.carbon.humantask.core.integration.AxisHumanTaskMessageReceiver} -
 Task creation failed.*
*org.wso2.carbon.humantask.core.engine.runtime.api.HumanTaskRuntimeException:
Error occurred while calling to realm service for operation isExistingRole*
at
org.wso2.carbon.humantask.core.integration.CarbonUserManagerBasedPeopleQueryEvaluator.getUserNameListForRole(CarbonUserManagerBasedPeopleQueryEvaluator.java:71)
at
org.wso2.carbon.humantask.core.engine.util.CommonTaskUtil.nominate(CommonTaskUtil.java:320)
at
org.wso2.carbon.humantask.core.dao.jpa.openjpa.HumanTaskDAOConnectionImpl.createTask(HumanTaskDAOConnectionImpl.java:56)
at
org.wso2.carbon.humantask.core.engine.HumanTaskEngine.createTask(HumanTaskEngine.java:81)
at
org.wso2.carbon.humantask.core.engine.HumanTaskEngine.access$000(HumanTaskEngine.java:38)
at
org.wso2.carbon.humantask.core.engine.HumanTaskEngine$1.call(HumanTaskEngine.java:97)
at
org.wso2.carbon.humantask.core.engine.HumanTaskEngine$1.call(HumanTaskEngine.java:93)
at
org.wso2.carbon.humantask.core.scheduler.SimpleScheduler.execTransaction(SimpleScheduler.java:880)
at
org.wso2.carbon.humantask.core.scheduler.SimpleScheduler.execTransaction(SimpleScheduler.java:829)
at
org.wso2.carbon.humantask.core.engine.HumanTaskEngine.invoke(HumanTaskEngine.java:93)
at
org.wso2.carbon.humantask.core.integration.AxisHumanTaskMessageReceiver.invokeBusinessLogic(AxisHumanTaskMessageReceiver.java:74)
at
org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:110)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
at
org.apache.axis2.transport.local.LocalTransportReceiver.processMessage(LocalTransportReceiver.java:169)
at
org.apache.axis2.transport.local.LocalTransportReceiver.processMessage(LocalTransportReceiver.java:82)
at
org.wso2.carbon.core.transports.local.CarbonLocalTransportSender.finalizeSendWithToAddress(CarbonLocalTransportSender.java:45)
at
org.apache.axis2.transport.local.LocalTransportSender.invoke(LocalTransportSender.java:77)
at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:442)
at
org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:398)
at
org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:224)
at org.apache.axis2.client.OperationClient.execute(OperationClient.java:149)
at
org.wso2.carbon.governance.notifications.worklist.stub.WorkListServiceStub.addTask(WorkListServiceStub.java:183)
at
org.wso2.carbon.registry.eventing.RegistryEventDispatcher.notify(RegistryEventDispatcher.java:381)
at
org.wso2.carbon.event.core.internal.notify.CarbonNotificationManager.sendNotification(CarbonNotificationManager.java:62)
at org.wso2.carbon.event.core.internal.delivery.Worker.run(Worker.java:52)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
*Caused by: org.wso2.carbon.user.core.UserStoreException: Invalid
operation. You are trying to retrieve all users from the external
userstore.*
at
org.wso2.carbon.user.core.hybrid.HybridRoleManager.getUserListOfHybridRole(HybridRoleManager.java:272)
at
org.wso2.carbon.user.core.common.AbstractUserStoreManager.getUserListOfRole(AbstractUserStoreManager.java:1933)
at
org.wso2.carbon.humantask.core.integration.CarbonUserManagerBasedPeopleQueryEvaluator.getUserNameListForRole(CarbonUserManagerBasedPeopleQueryEvaluator.java:68)
... 29 more



When trying the user-role `*admin*`; it is working fine.

Any thoughts on this error?  Appreciate any help to solve this.

-- 
With Regards,

*Rasika Perera*
Software Engineer
M: +94 71 680 9060 E: [email protected]
LinkedIn: http://lk.linkedin.com/in/rasika90

WSO2 Inc. www.wso2.com
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