AR ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *commented* on HSEARCH-4352 ( https://hibernate.atlassian.net/browse/HSEARCH-4352?atlOrigin=eyJpIjoiYjZ... ) Re: MappingException: property [xxx] not found on entity [yyy] ( https://hibernate.atlassian.net/browse/HSEARCH-4352?atlOrigin=eyJpIjoiYjZ... ) Issue is marked es solved for the version '6.0.8.Final’, but i’m using HibernateSearch '6.1.8.Final’ and HibernateCore ‘5.6.15.Final' and still face it for some reason. There is a bidirectional mapping Class A @OneToMany(cascade=CascadeType.ALL, orphanRemoval=true, fetch=FetchType.EAGER, mappedBy=“a") @MapKey(name="name") private Map<String, P> parameters = new HashMap<>(); @IdClass(B.PK.class) Class B @Id @ManyToOne(optional=false) private A a; Leads to: property [a] not found on entity [B] The workaround for it was to replace the mapping for composite primary key of B from @IdClass to @EmbeddedId. So now it works, but still wondering why … since the issue is solved ( https://hibernate.atlassian.net/browse/HSEARCH-4352#add-comment?atlOrigin... ) Add Comment ( https://hibernate.atlassian.net/browse/HSEARCH-4352#add-comment?atlOrigin... ) 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#100227- sha1:28a616e )