n8n Notion Node: Relation Field Missing in Update Dropdown

Below is a summary of the issue and some potential next steps:

The Issue

• When updating a Notion Database Page using the n8n Notion node, the property of type “Relation” does not appear in the dropdown—even though all other property types are shown.
• You’ve confirmed that the related database has been shared with the integration/credentials as detailed in the Notion API docs.
• There are similar reports on the n8n community forum (e.g. by @Rowingbobcat) indicating that this behavior might be either a bug or a limitation rather than an intentional deprecation of relation properties.

Potential Causes

• Node Limitation/Bug: The Notion node might not currently support relation properties for the “Update” operation, even though they could sometimes be selectable in previous versions or reports.
• API Changes: While the Notion API supports relation properties, the way the node parses and displays properties in the dropdown may not fully accommodate them yet.

Next Steps and Workarounds

• Monitor Updates: Check the n8n changelogs or GitHub issues for any updates regarding this behavior. It’s possible there might be bug fixes for later versions.
• Alternate Approaches:
  • If updating the relation property is critical, consider using the Execute SQL-style approach by manually calling the Notion API (if applicable), which allows you to control the payload more directly.
  • Alternatively, you could consider using the Notion Trigger node if your workflow allows for retrieving the current page state and then updating it via a manual API request.
• Community & Support:
  • Engage with the n8n community forum to see if others have found more advanced workarounds.
  • Raise the issue on the n8n GitHub repository if you believe it’s a bug and it hasn’t already been reported.

By keeping an eye on updates or using a manual API request, you may be able to circumvent this issue until native support is improved.