NoSuchUserAccountException for Message Bean

I'm trying to deploy a message bean from the Visual Administrator and got the following error:

#1.5#000347B22B6600730000003100000A940003ECE67BC0BE40#1104899593023#com.sap.engine.services.deploy##com.sap.engine.services.deploy#######SAPEngine_System_Thread[impl:5]_70##0#0#Error#1#/System/Server#Java#deploy_5082##Exception while preparing start of application sap.com/myEar.#1#preparing start of application sap.com/myEar#

#1.5#000347B22B6600730000003200000A940003ECE67BC0BF66#1104899593023#com.sap.engine.services.deploy##com.sap.engine.services.deploy#######SAPEngine_System_Thread[impl:5]_70##0#0#Error#1#/System/Audit#Java###Exception #1#com.sap.engine.services.deploy.exceptions.ServerDeploymentException: Exception while preparing start of application sap.com/myEar.

at com.sap.engine.services.deploy.server.application.StartTransaction.prepare(StartTransaction.java:359)

at com.sap.engine.services.deploy.server.application.ApplicationTransaction.makeAllPhasesOnOneServer(ApplicationTransaction.java:313)

at com.sap.engine.services.deploy.server.application.ParallelAdapter.makeAllPhasesImpl(ParallelAdapter.java:303)

at com.sap.engine.services.deploy.server.application.ParallelAdapter.run(ParallelAdapter.java:73)

at com.sap.engine.frame.core.thread.Task.run(Task.java:60)

at com.sap.engine.core.thread.impl5.SingleThread.execute(SingleThread.java:73)

at com.sap.engine.core.thread.impl5.SingleThread.run(SingleThread.java:134)

Caused by: com.sap.security.core.server.userstore.UserstoreException: Could not get user null

at com.sap.security.core.server.userstore.UserContextUME.engineGetUserInfo(UserContextUME.java:187)

at com.sap.engine.services.security.userstore.context.UserContext.getUserInfo(UserContext.java:87)

at com.sap.engine.services.ejb.message.MessageContainer.initSecurityRunAs(MessageContainer.java:285)

at com.sap.engine.services.ejb.message.MessageContainer.init(MessageContainer.java:131)

at com.sap.engine.services.ejb.message.MessageContainerFP.init(MessageContainerFP.java:53)

at com.sap.engine.services.ejb.EJBAdmin.prepareLoad(EJBAdmin.java:972)

at com.sap.engine.services.ejb.EJBAdmin.prepareStart(EJBAdmin.java:2405)

at com.sap.engine.services.deploy.server.application.StartTransaction.prepare(StartTransaction.java:349)

... 6 more

Caused by: com.sap.security.api.NoSuchUserAccountException: Cannot find user when logonid is null!

at com.sap.security.core.imp.UserAccountFactory.getUserAccountByLogonId(UserAccountFactory.java:290)

at com.sap.security.core.imp.UserAccountFactory.getUserAccountByLogonId(UserAccountFactory.java:277)

at com.sap.security.core.imp.UserAccountFactory.getUserAccountByLogonId(UserAccountFactory.java:371)

at com.sap.security.core.imp.UserAccountFactory.getUserAccountByLogonId(UserAccountFactory.java:366)

at com.sap.security.core.server.userstore.UserContextUME.engineGetUserInfo(UserContextUME.java:183)

... 13 more

============

The ejb.xml is configured as

<message-driven>

<description>Executes the executeEvent method of an EventExecutor

</description>

<display-name>Event Executor MDB</display-name>

<ejb-name>EventExecutorMDBean</ejb-name>

<ejb-class>com.system.events.ejb.EventExecutorMDBean</ejb-class>

<transaction-type>Container</transaction-type>

<message-selector>eventname=&apos;ExecuteEvent&apos;</message-selector>

<message-driven-destination>

<destination-type>javax.jms.Topic</destination-type>

<subscription-durability>NonDurable</subscription-durability>

</message-driven-destination>

<security-identity>

<run-as>

<role-name>admin</role-name>

</run-as>

</security-identity>

<resource-ref>

<res-ref-name>jms/MyTopicConnectionFactory</res-ref-name>

<res-type>javax.jms.TopicConnectionFactory</res-type>

<res-auth>Container</res-auth>

</resource-ref>

<resource-env-ref>

<resource-env-ref-name>jms/MyJMSTopic</resource-env-ref-name>

<resource-env-ref-type>javax.jms.Topic</resource-env-ref-type>

</resource-env-ref>

</message-driven>

=========jms-factories.xml===========

<jms-factories>

<application-name>myEar</application-name>

<connection-factory>

<factory-name>

jms/myTopicConnectionFactory

</factory-name>

<context-factory-type>

<link-factory-name>

jmsfactory/default/XATopicConnectionFactory

</link-factory-name>

<initial-context-factory>

com.sap.engine.services.jndi.InitialContextFactoryImpl

</initial-context-factory>

</context-factory-type>

</connection-factory>

<connection-factory>

<factory-name>

jms/myQueueConnectionFactory

</factory-name>

<context-factory-type>

<link-factory-name>

jmsfactory/default/XAQueueConnectionFactory

</link-factory-name>

<initial-context-factory>

com.sap.engine.services.jndi.InitialContextFactoryImpl

</initial-context-factory>

</context-factory-type>

</connection-factory>

</jms-factories>

========== jms-destinations.xml=====

<jms-destinations>

<destination>

<connection-factory>jms/myTopicConnectionFactory</connection-factory>

<destination-name>topic/myJMSTopic</destination-name>

</destination>

<destination>

<connection-factory>jms/myQueueConnectionFactory</connection-factory>

<destination-name>queue/myEventHistory</destination-name>

</destination>

<destination>

<connection-factory>jms/myQueueConnectionFactory</connection-factory>

<destination-name>queue/myLog</destination-name>

</destination>

</jms-destinations>

I thought JMS would use the same logon as what I use to logon to the J2EE engine when using Visual Administrator. I'm not sure that the error message is really about. Any help will be much appreciated!

Thank you.