What is "AnnotateOverwrite"? Do you mean JPA's AttributeOverride?

What is the exception you get?

One work around should be to put @NaturalId on the MappedSuperclass. There are tests for that specifically. I am adding one that tries this approach.

I'm thinking we probably should support this, although IMO I think it should only work in conjunction with @AttributeOverride. This would be more consistent with how annotation handling is defined to work and how we currently define as well.

@Entity
@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
@NaturalIdCache
public class MyEntity extends BasicEntity {

    private String name;

    @AttributeOverride
    @NaturalId
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}