---
title: "Undo a theme definition update"
method: POST
path: "/{tenant}/definitions/{themeId}/undo"
tags: ["ThemeDefinitions"]
---

# Undo a theme definition update

`POST /{tenant}/definitions/{themeId}/undo`

Undoes the last update to a theme definition, or reverts to the version given in the body.

## Request body

- UndoThemeInput — unresolved $ref

## Response `200`

The restored theme definition with the version transition.

- UndoThemeOutput — unresolved $ref

## Other responses

- `400` — unresolved $ref
- `401` — unresolved $ref
- `403` — unresolved $ref
- `404` — unresolved $ref
- `500` — unresolved $ref

## Changes

- **2026-07-07** `e1e9983e1809` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/sphereon-opensource/apis/theme-api/changes/:tenant/definitions/:themeId/undo/post.md)

---

[API](https://skmtc.dev/sphereon-opensource/apis/theme-api.md) · [All operations](https://skmtc.dev/sphereon-opensource/apis/theme-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/sphereon-opensource/theme-api/revisions/a2197538ab3a/schema)