Fix taxonomy history endpoint URL

[jpople]

Ticket ENG-2260

Description Of Changes

Fixes the taxonomy history view calling the wrong URL for the history (/taxonomies/..., not /plus/taxonomies/...)

Steps to Confirm

1. Add a custom taxonomy
2. Add some items to the taxonomy
3. Click the root node of the taxonomy, then go to the "History" tab
4. API should have called GET /plus/taxonomy/... and should see history entries

Pre-Merge Checklist

• Issue requirements met
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• CHANGELOG.md updated
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  • Updates unreleased work already in Changelog, no new entry necessary
• UX feedback:
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• Documentation:
  • Documentation complete, PR opened in fidesdocs
  • Documentation issue created in fidesdocs
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Project	Deployment	Review	Updated (UTC)
fides-plus-nightly	Ready	Preview, Comment	Jan 5, 2026 7:38pm

1 Skipped Deployment

Project	Deployment	Review	Updated (UTC)
fides-privacy-center	Ignored		Jan 5, 2026 7:38pm

[greptile-apps]

Greptile Summary

This PR fixes a URL routing issue for the taxonomy history endpoint. The endpoint was incorrectly calling /taxonomies/{fides_key}/history when it should have been calling /plus/taxonomies/{fides_key}/history to access the Fides Plus taxonomy history feature.

• Updated getTaxonomyHistory query URL to include the /plus/ prefix (line 131)

The fix is minimal, focused, and correctly addresses the routing issue described in the PR description.

Confidence Score: 5/5

• This PR is safe to merge with minimal risk
• This is a simple, one-line URL fix that corrects an endpoint path. The change is straightforward, well-documented in the PR description, and only affects the taxonomy history feature. No logic changes, no security implications, and the fix aligns perfectly with the stated purpose.
• No files require special attention

Important Files Changed

Filename	Overview
clients/admin-ui/src/features/taxonomy/taxonomy.slice.ts	Fixed taxonomy history endpoint URL by adding /plus/ prefix to correctly route to Plus API endpoint

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