Christian Beikov ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *commented* on HHH-16122 ( https://hibernate.atlassian.net/browse/HHH-16122?atlOrigin=eyJpIjoiNDEwZm... ) Re: Named type [class xxx] did not implement BasicType nor UserType ( https://hibernate.atlassian.net/browse/HHH-16122?atlOrigin=eyJpIjoiNDEwZm... ) You can avoid hitting that code if you don’t use type variables at all in the mapped super class. The mere presence of the type variables means that Hibernate has to do some special processing, so if you don’t have that, you don’t run into this issue. As you can see on the website ( https://hibernate.org/community/ ) , our chat platform is Zulip ( https://hibernate.zulipchat.com/#narrow/stream/132096-hibernate-user ) , where you can get in touch with Hibernate developers like me. ( https://hibernate.atlassian.net/browse/HHH-16122#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16122#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100214- sha1:c33f0bb )