wildfly-11.0.0.Final JPA ------------------------ Key: WFLY-9604 URL: https://issues.jboss.org/browse/WFLY-9604 Project: WildFly Issue Type: Feature Request Components: JPA / Hibernate Affects Versions: 11.0.0.Final Environment: Javaee 7, Windows 7, jdk 8 151 Reporter: Trond Arild Lode Tobiassen Heidelberg Labels: task Fix For: 12.0.0.Alpha1 I am deploying to above. I get this error message: {"jboss.persistenceunit.registrar#REGDB" => "org.hibernate.AnnotationException: Property no.tobiassenit.sipstack.sip.message.AbstractMessage.part has an unbound type and no explicit target entity. Resolve this Generic usage issue or set an explicit target attribute (eg @OneToMany(target=) or use an explicit @Type Caused by: org.hibernate.AnnotationException: Property no.tobiassenit.sipstack.sip.message.AbstractMessage.part has an unbound type and no explicit target entity. Resolve this Generic usage issue or set an explicit target attribute (eg @OneToMany(target=) or use an explicit @Type"}, I have this code: @OneToOne(optional = true, cascade = CascadeType.ALL, targetEntity = AbstractPart.class) @JoinColumn(name = "PART", unique = false, nullable = true, updatable = false) protected X part; What about the target= vs the targetEntity=? There is no target attribute or @Type annotation available.