Ignore stale custom field data when validating an object #675

New Issue

MrUnknownDE · 2026-04-05T17:06:57+02:00

MrUnknownDE commented

2026-04-05 17:06:57 +02:00

Originally created by @jeremystretch on 12/29/2025

NetBox Edition

NetBox Community

NetBox Version

v4.4.9

Python Version

3.12

Steps to Reproduce

This bug was prompted by netboxlabs/netbox-branching#378, wherein attempting to merge an object which has stale data from a deleted custom field yields a ValidationError exception. This prevents a branch from being merged.

Although this manifests as an issue in the branching plugin, it can be argued that the additional validation is unnecessary, as the stale custom field data can be safely ignored without interfering with the object's validation.

Expected Behavior

The presence of stale custom field data should not cause validation to fail.

Observed Behavior

When attempting to validate an object, any custom field data belonging to a custom field which no longer exists will trigger a validation failure:

f510e40428/netbox/netbox/models/features.py (L291-L296)

*Originally created by @jeremystretch on 12/29/2025* ### NetBox Edition NetBox Community ### NetBox Version v4.4.9 ### Python Version 3.12 ### Steps to Reproduce This bug was prompted by netboxlabs/netbox-branching#378, wherein attempting to merge an object which has stale data from a deleted custom field yields a ValidationError exception. This prevents a branch from being merged. Although this manifests as an issue in the branching plugin, it can be argued that the additional validation is unnecessary, as the stale custom field data can be safely ignored without interfering with the object's validation. ### Expected Behavior The presence of stale custom field data should not cause validation to fail. ### Observed Behavior When attempting to validate an object, any custom field data belonging to a custom field which no longer exists will trigger a validation failure: https://github.com/netbox-community/netbox/blob/f510e4042818053aeac3a95c7f6a49179dc2de14/netbox/netbox/models/features.py#L291-L296

MrUnknownDE closed this issue

2026-04-05 17:06:57 +02:00

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Branches Tags

main

21455-sql-indexes-audit

21357-register-model-actions

feature

20924-plugin-ui-components

21766-improve-test-coverage-for-sortable-table-columns

21157-export-template-public-models

21025-pre-render-config-contexts

21364-swagger

feature-ip-prefix-link

20911-dropdown-3

fix_module_substitution

21160-filterset

20911-dropdown-2

20044-elevation-stuck-lightmode

7604-filter-modifiers-v3

20660-script-load

19724-graphql

14884-script

19720-macaddress-interface-generic-relation

fix-19669-api-image-download

7604-filter-modifiers

19275-fixes-interface-bulk-edit

fix-17794-get_field_value_return_list

11507-show-aggregate-and-rir-on-api

9583-add_column_specific_search_field_to_tables

No Label netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox 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Reference: github/netbox#675