@Entity
@Audited
@Table(name = "CUSTOM_TAG_INSTANCE")
public class CustomTagInstance implements java.io.Serializable {

private Long tagInstanceId;
private instrument instrument;

@Id
@Column(name = "TAG_INSTANCE_ID", unique = true, nullable = false, precision = 22, scale = 0)
public Long getTagInstanceId() {
    return this.tagInstanceId;
}

public void setTagInstanceId(Long tagInstanceId) {
    this.tagInstanceId = tagInstanceId;
}

@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "INSTRUMENT_ID")
public Instrument getInstrument() {
    return this.instrument;
}

public void setInstrument(Instrument instrument) {
    this.instrument = instrument;
}

AuditQuery query_cusTag = audQueryCreator.forEntitiesAtRevision(CustomTagInstance.class, revision_Id)
                .add( AuditEntity.property( "instrument.instrumentId" ).eq( id ) )
                .add(AuditEntity.revisionNumber().eq(revision_Id));

        CustomTagInstance customTagInst = null;
        List list_side = query_cusTag.getResultList();
        for(int i=0; i<list_side.size(); i++){
            customTagInst = (CustomTagInstance) list_side.get(i);
        }

org.hibernate.QueryException: could not resolve property: instrumentId of: com.epsilon.ets.server.db.table.CustomTagInstance_AUD