Gajendra Kumar ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *commented* on HHH-13410 ( https://hibernate.atlassian.net/browse/HHH-13410?atlOrigin=eyJpIjoiYjVlNz... ) Re: "order_inserts = true" causes FK Violation when inserting with a special case of Unidirectional Relations between 4 Entities ( https://hibernate.atlassian.net/browse/HHH-13410?atlOrigin=eyJpIjoiYjVlNz... ) This issue is due to below code in ActionQueue as nextBatchIdentifier.parent is assigned a parent. There can be multiple parents but with this code only one parent reference is being hold. for ( int j = i + 1; j < latestBatches.size(); j++ ) { BatchIdentifier nextBatchIdentifier = latestBatches.get( j ); if ( nextBatchIdentifier.hasAnyParentEntityNames( batchIdentifier ) ) { nextBatchIdentifier.parent = batchIdentifier; } if ( batchIdentifier.hasAnyChildEntityNames( nextBatchIdentifier ) ) { nextBatchIdentifier.parent = batchIdentifier; } } Fix: parent should be added to nextBatchIdentifier.parentEntityNames for ( int j = i + 1; j < latestBatches.size(); j++ ) { BatchIdentifier nextBatchIdentifier = latestBatches.get( j ); if ( nextBatchIdentifier.hasAnyParentEntityNames( batchIdentifier ) ) { nextBatchIdentifier.parent = batchIdentifier; nextBatchIdentifier.getParentEntityNames().add(batchIdentifier.getEntityName()); } if ( batchIdentifier.hasAnyChildEntityNames( nextBatchIdentifier ) ) { nextBatchIdentifier.parent = batchIdentifier; nextBatchIdentifier.getParentEntityNames().add(batchIdentifier.getEntityName()); } } I’ll create pull request soon 🙂 ( https://hibernate.atlassian.net/browse/HHH-13410#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-13410#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#100133- sha1:d093d11 )