---
schema_version: "1"
id: 61c1ead928b589720e307c927e14d2b71c1c2fa7d9c1a89cf4852a7db3e54d74
title: Exception Not Thrown When Building a To-One Relationship
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/commerce/264-0-0/b2c_20_1_3_w7013739_exception_la.md
canonical_url: https://help.salesforce.com/s/articleView?id=commerce.b2c_20_1_3_w7013739_exception_la.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: a24ad965876290bf7f1c1d4fdeb6dba3d87b98ff65b586f0b331b84655cf62fe
description: "Under some rare, specific conditions, exceptions of type ORMMandatoryException: Can't unset mandatory to-1 relationship were thrown if the target object didn't change. This issue has been fixed, eliminating some errors that occur when customers place orders."
products:
  - Commerce
  - B2C Commerce
release: "264"
---
# Exception Not Thrown When Building a To-One Relationship

Under some rare, specific conditions, exceptions of type `ORMMandatoryException: Can't unset mandatory to-1 relationship` were thrown if the target object didn't change. This issue has been fixed, eliminating some errors that occur when customers place orders.