IllegalStateException: Cannot obtain inMethodFlag for: getPrimaryKey

Hi all,

I am new to EJB. I am getting the following error in EJB(2.1) but could not figure it out. Please help.

java.lang.IllegalStateException: Cannot obtain inMethodFlag for: getPrimaryKey
        at org.jboss.ejb.AllowedOperationsAssociation.assertAllowedIn(AllowedOpe
rationsAssociation.java:119)
        at org.jboss.ejb.EntityEnterpriseContext$EntityContextImpl.getPrimaryKey
(EntityEnterpriseContext.java:338)
        at com.test.util.ejb.EntityBase.id(EntityBase.java:92)
        at com.test.util.ejb.EntityBase.unsetEntityContext(EntityBase.java:8
3)
        at org.jboss.ejb.EntityEnterpriseContext.discard(EntityEnterpriseContext
.java:114)
        at org.jboss.ejb.plugins.AbstractInstancePool.discard(AbstractInstancePo
ol.java:244)
        at org.jboss.ejb.plugins.EntityInstanceInterceptor.invokeHome(EntityInst
anceInterceptor.java:171)
        at org.jboss.ejb.plugins.EntityLockInterceptor.invokeHome(EntityLockInte
rceptor.java:61)
        at org.jboss.ejb.plugins.EntityCreationInterceptor.invokeHome(EntityCrea
tionInterceptor.java:28)
        at org.jboss.ejb.plugins.CallValidationInterceptor.invokeHome(CallValida
tionInterceptor.java:41)
        at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInte
rceptor.java:109)
        at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxIntercep
torCMT.java:335)
        at org.jboss.ejb.plugins.TxInterceptorCMT.invokeHome(TxInterceptorCMT.ja
va:146)
        at org.jboss.ejb.plugins.SecurityInterceptor.invokeHome(SecurityIntercep
tor.java:116)
        at org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:1
21)
        at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invokeHome(ProxyF
actoryFinderInterceptor.java:93)
        at org.jboss.ejb.EntityContainer.internalInvokeHome(EntityContainer.java
:508)
        at org.jboss.ejb.Container.invoke(Container.java:894)
        at sun.reflect.GeneratedMethodAccessor98.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatch
er.java:141)
        at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
        at org.jboss.mx.server.Invocation.invoke(Invocation.java:72)
        at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.
java:249)
        at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
        at org.jboss.invocation.local.LocalInvoker$MBeanServerAction.invoke(Loca
lInvoker.java:155)
        at org.jboss.invocation.local.LocalInvoker.invoke(LocalInvoker.java:104)

at org.jboss.invocation.InvokerInterceptor.invokeMarshalled(InvokerInter
ceptor.java:201)
        at org.jboss.invocation.MarshallingInvokerInterceptor.invoke(Marshalling
InvokerInterceptor.java:35)
        at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.
java:46)
        at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:5
5)
        at org.jboss.proxy.ejb.HomeInterceptor.invoke(HomeInterceptor.java:169)
        at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:86)
        at $Proxy214.create(Unknown Source)
        at com.test.entity.ui.MyClient
.create(MyClient.java:194)