IT Support ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *commented* on HHH-10956 ( https://hibernate.atlassian.net/browse/HHH-10956?atlOrigin=eyJpIjoiYzY4Nz... ) Re: Persisting partially-generated composite Ids fails with HibernateException: No part of a composite identifier may be null ( https://hibernate.atlassian.net/browse/HHH-10956?atlOrigin=eyJpIjoiYzY4Nz... ) Tracked this down, it was caused by HHH-4848 ( https://hibernate.atlassian.net/browse/HHH-4848 ) Closed on Wed Feb 3 06:58:46 2010 +0000 see: https://hibernate.atlassian.net/browse/HHH-4848 The check used to skip null values with a continue, but was changed to throw an exception. As such HHH-10956 ( https://hibernate.atlassian.net/browse/HHH-10956 ) Open is a regression caused by HHH-4848 ( https://hibernate.atlassian.net/browse/HHH-4848 ) Closed This is the (relevant) commit log for the offending file ( https://hibernate.atlassian.net/browse/HHH-10956#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-10956#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#100125- sha1:0a83519 )