When using Hibernate as JPA provider, enhance entities.
'org.apache.syncope:syncope-hibernate-enhancer:1.0.4'
<dependency>
<groupId>org.apache.syncope</groupId>
<artifactId>syncope-hibernate-enhancer</artifactId>
<version>1.0.4</version>
</dependency>
<dependency org="org.apache.syncope" name="syncope-hibernate-enhancer" rev="1.0.4"/>
"org.apache.syncope", "syncope-hibernate-enhancer", "1.0.4"