Keep the java.lang.Object type for primary kay class, but remove the 
<primkey-field>id</primkey-field> declaration.
As the primary key is declared as unknown, you cannot set a CMP field as primary key.
Normally, when doing that, no CMP field should be declared for the primary key. But 
you can anyway, but do not declare the CMP field as primary key.
To find your bean, you must use also the findByPrimaryKey method.

You can have a look to the:
http://www.jboss.org/index.html?module=bb&op=viewtopic&t=47787
topic, which talks about the subject


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http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3831914#3831914

Reply to the post : 
http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3831914


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