is there additional stack traces (Caused By?) that you didn't attach? usually it'll tell you a bit more about what's wrong with the query. The JPQL looks good, make sure: a) You have an actual @Entity named Language b) Language has a mapped @Column "AgentCode" c) if you mapped on the getter, it must be "getAgentCode", if you mapped a field, it must be named AgentCode. In fact, I'm not sure if that capital 'A' in your JPQL will cause a problem or not - I've always used lower case and it always matched my lower-case field names, so I don't know how case-sensitivity works Perhaps its best for you to post your Language entity and its mappings. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4108295#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...