Field 'termination' does not generate an automatic reverse relation and therefore cannot be used for reverse querying.

[suphapongB]

Deployment Type

Self-hosted

NetBox Version

v4.3.0

Python Version

3.12

Steps to Reproduce

1. Click on "Circuits"
2. Click on circuit-terminations or via link http://host/circuits/circuit-terminations/
3. Face error page

Expected Behavior

When navigating to the /circuits/circuit-terminations/ page as any user, the page should load successfully and display the list of circuit terminations without error — regardless of which user is logged in.

Observed Behavior

"Field 'termination' does not generate an automatic reverse relation and therefore cannot be used for reverse querying. If it is a GenericForeignKey, consider adding a GenericRelation."

When I navigate to /circuits/circuit-terminations/, the page throws a server error only for one specific user. If I login using another account, the page works normally without error.

What I Tried

• Cleared browser cache and session cookies
• Compared access permissions – both users are staff users with similar roles
• Reproduced consistently on Docker restart
• Upgraded to NetBox 4.3.0 – issue still exists

[jnovinger]

Thank you for opening a bug report. The information you have provided is not sufficient for someone else to attempt to reproduce the reported behavior. Each bug report must include detailed steps that someone else can follow on a clean, empty NetBox installation to reproduce the exact problem you're experiencing. These instructions should include the creation of any involved objects, any configuration changes, and complete accounting of the actions being taken. Also be sure that your report does not reference data on the public NetBox demo, as that is subject to change at any time by an outside party and cannot be relied upon for bug reports.

This certainly feels like the data in your instance got into an unexpected state. However, if we can't come up with clear reproduction steps, I'd suggest we convert this to a Discussion and see if anyone else in the community has any insight.

[github-actions]

This is a reminder that additional information is needed in order to further triage this issue. If the requested details are not provided, the issue will soon be closed automatically.

[Denis-themenace]

Hi @suphapongB and @jnovinger,
I just ran into the same error but for the "Tunnel Terminations" section.

Field 'termination' does not generate an automatic reverse relation and therefore cannot be used for reverse querying. If it is a GenericForeignKey, consider adding a GenericRelation.

Python version: 3.12.3
NetBox version: 4.1.1
Plugins: None installed

Solution:

• User preferences > Table Configurations > Clear table preferences for the problematic section.

Steps to reproduce (in my case):

1. Go to > VPN > Tunnel Terminations > Configure table
2. Add "Tunnel Interface" column > Save
3. Try to sort table by clicking "Tunnel Interface" column header. ("Try", because it won't work)
4. Refresh the page

[jnovinger]

Thanks for the pointer @Denis-themenace ! It seems like the original is much the same thing, when sorting Circuit Terminations on the 'termination point' field.

STR for the original issue:

1. Navigate to circuits/circuit-terminations/
2. Click on the 'Termination Point' column header to sort by that field

Expected behavior:
Data is returned in the table, sorted by the 'Termination Point' column

Actual behavior:
A FieldError is thrown and the view crashes

Exception Type: FieldError at /circuits/circuit-terminations/
Exception Value: Field 'termination' does not generate an automatic reverse relation and therefore cannot be used for reverse querying. If it is a GenericForeignKey, consider adding a GenericRelation.