hibernate can't target an unmapped class

-make sure the annotation is javax.persistence.Entity, and not org.hibernate.annotations.Entity. The former makes the entity detectable. The latter is just an addition.

-if you are manually listing your entities (in persistence.xml, in hibernate.cfg.xml, or when configuring your session factory), then make sure you have also listed the ScopeTopic entity

-use packagesToScan in sessionFactory rather than annotatedPackages and pass all the packages with entities

-make sure you don't have multiple ScopeTopic classes in different packages, and you've imported the wrong one.