I am getting an exception:

"More than one row with the given identifier was found: 8819"

There is only one row in the database. I am not using any caching either. What might be causing this error?

The stack trace is:

Additional error details (if any): System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> NHibernate.HibernateException: More than one row with the given identifier was found: 8819, for class: CID.IPath.NewBusinessLayer.claimuser at NHibernate.Loader.EntityLoader.Load(ISessionImplementor session, Object id, Object optionalObject, Object optionalId) at NHibernate.Persister.AbstractEntityPersister.LoadByUniqueKey(String propertyName, Object uniqueKey, ISessionImplementor session) at NHibernate.Impl.SessionImpl.LoadByUniqueKey(Type clazz, String uniqueKeyPropertyName, Object id) at NHibernate.Type.EntityType.ResolveIdentifier(Object id, ISessionImplementor session, Object owner) at NHibernate.Impl.SessionImpl.InitializeEntity(Object obj) at NHibernate.Loader.Loader.InitializeEntitiesAndCollections(IList hydratedObjects, Object resultSetId, ISessionImplementor session) at NHibernate.Loader.Loader.DoQuery(ISessionImplementor session, QueryParameters queryParameters, Object optionalObject, Object optionalId, Object[] optionalCollectionKeys, Boolean returnProxies) at NHibernate.Loader.Loader.DoQueryAndInitializeNonLazyCollections(ISessionImplementor session, QueryParameters queryParameters, Object optionalObject, Object optionalId, Object[] optionalCollectionKeys, Boolean returnProxies) at NHibernate.Loader.EntityLoader.Load(ISessionImplementor session, Object id, Object optionalObject, Object optionalId) at NHibernate.Loader.EntityLoader.Load(ISessionImplementor session, Object id, Object optionalObject) at NHibernate.Persister.EntityPersister.Load(Object id, Object optionalObject, LockMode lockMode, ISessionImplementor session) at NHibernate.Impl.SessionImpl.DoLoad(Type theClass, Object id, Object optionalObject, LockMode lockMode, Boolean checkDeleted) at NHibernate.Impl.SessionImpl.DoLoadByClass(Type clazz, Object id, Boolean checkDeleted, Boolean allowProxyCreation) at NHibernate.Impl.SessionImpl.InternalLoad(Type clazz, Object id) at NHibernate.Type.ManyToOneType.ResolveIdentifier(Object id, ISessionImplementor session) at NHibernate.Type.EntityType.ResolveIdentifier(Object id, ISessionImplementor session, Object owner) at NHibernate.Impl.SessionImpl.InitializeEntity(Object obj) at NHibernate.Loader.Loader.InitializeEntitiesAndCollections(IList hydratedObjects, Object resultSetId, ISessionImplementor session) at NHibernate.Loader.Loader.DoQuery(ISessionImplementor session, QueryParameters queryParameters, Object optionalObject, Object optionalId, Object[] optionalCollectionKeys, Boolean returnProxies) at NHibernate.Loader.Loader.DoQueryAndInitializeNonLazyCollections(ISessionImplementor session, QueryParameters queryParameters, Object optionalObject, Object optionalId, Object[] optionalCollectionKeys, Boolean returnProxies) at NHibernate.Loader.EntityLoader.Load(ISessionImplementor session, Object id, Object optionalObject, Object optionalId) at NHibernate.Loader.EntityLoader.Load(ISessionImplementor session, Object id, Object optionalObject) at NHibernate.Persister.EntityPersister.Load(Object id, Object optionalObject, LockMode lockMode, ISessionImplementor session) at NHibernate.Impl.SessionImpl.DoLoad(Type theClass, Object id, Object optionalObject, LockMode lockMode, Boolean checkDeleted) at NHibernate.Impl.SessionImpl.DoLoadByClass(Type clazz, Object id, Boolean checkDeleted, Boolean allowProxyCreation) at NHibernate.Impl.SessionImpl.InternalLoad(Type clazz, Object id) at NHibernate.Type.ManyToOneType.ResolveIdentifier(Object id, ISessionImplementor session) at NHibernate.Type.EntityType.ResolveIdentifier(Object id, ISessionImplementor session, Object owner) at NHibernate.Impl.SessionImpl.InitializeEntity(Object obj) at NHibernate.Loader.Loader.InitializeEntitiesAndCollections(IList hydratedObjects, Object resultSetId, ISessionImplementor session) at NHibernate.Loader.Loader.DoQuery(IS