news_wei ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=637c55c... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiYTQ1MGQ1ZTNj... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-15741?atlOrigin=eyJpIjoiYTQ1MG... ) HHH-15741 ( https://hibernate.atlassian.net/browse/HHH-15741?atlOrigin=eyJpIjoiYTQ1MG... ) Explicit declaration assigned identifier generator does not work ( https://hibernate.atlassian.net/browse/HHH-15741?atlOrigin=eyJpIjoiYTQ1MG... ) Issue Type: Bug Affects Versions: 6.1.5 Assignee: Unassigned Components: hibernate-core Created: 21/Nov/2022 21:10 PM Environment: Hibernate core：6.1.5 JVM：JRE18 OS：win10 Priority: Major Reporter: news_wei ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=637c55c... ) if the id property is assigned by value,the exception list as below ja karta.persistence.PersistenceException: Converting org.hibernate.PersistentObjectException to JPA PersistenceException : detached entity passed to persist: demo.jpa.demo2022112104.ProductUUID if not assigned,the error message is： ids for this class must be manually assigned before calling save() the domain model is as follows @Entity public class ProductUUID { @Id @GeneratedValue(generator= "assigned" ) @GenericGenerator(name= "assigned" , strategy= "assigned" , parameters= { @Parameter(name= "entity_name" , value= "ProductUUID" ) } ) private String id; ... } ( https://hibernate.atlassian.net/browse/HHH-15741#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-15741#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#100210- sha1:eab5823 )