Yes. Otherwise you would be unable to send the Primary Key down the "wire" to the
EJB server in order to be able to access the EJB.
The secret of how to be miserable is to constantly expect things are going to happen the way that they are "supposed" to happen.
You can have faith, which carries the understanding that you may be disappointed. Then there's being a willfully-blind idiot, which virtually guarantees it.