---
updatedAt: 2026-06-18T13:04:27.000Z
agentTools:
  projectIndex: https://docs.polytomic.com/llms.txt
---

# Invalid Reference Removed

### Example warning

*Removed invalid reference to "person" with value "<john@doe.com>".*

### Warning description

This happens when the CRM rejects a record update/create because an invalid value was written to a relationship field and the sync is configured to remove invalid relationships.

In CRMs, certain fields may contain links to other records. If such a field is setup, it must contain a valid reference to another record. The record will produce an error if the CRM cannot locate a record for the related entity type. With the advanced sync *Remove invalid relationship ID references* turned on, Polytomic will remove the relationship value from the record and reprocess the record.