Well no, because both entities are created at client side and sent to the server for persisting later.
Just for this case we implemented a JUnit test and an integration test which runs against our WebSphere development server and everything works fine. But as soon as the RCP client comes into play, we get the exception. It's weird, isn't it? -- View this message in context: http://openjpa.208410.n2.nabble.com/Strange-behaviour-on-ManyToMany-relationship-using-RCP-client-tp6985422p6985766.html Sent from the OpenJPA Users mailing list archive at Nabble.com.