---
title: "Unmerge Activity Endpoint"
method: POST
path: "/aurd-tracking/{claim_id}/activities/{activity_id}/unmerge"
tags: ["au-rd-tracking"]
---

# Unmerge Activity Endpoint

`POST /aurd-tracking/{claim_id}/activities/{activity_id}/unmerge`

## Request

- Base URL: `https://api.claimkit.co` (the document declares no server; this is the origin it was published from)
- URL: `https://api.claimkit.co/aurd-tracking/{claim_id}/activities/{activity_id}/unmerge`
- Auth: none declared

Reverse the most recent merge that absorbed ``activity_id``.

Restores every source activity in that merge event. 404 if no reversible
merge exists; 409 if the target has since been merged again. Activity-map
claims reverse via ``app.activity_map.edits.merge.unmerge_activities``
(``event_id`` in the response is the reversal's Edit row id).

## Path parameters

- `claim_id` integer, required
- `activity_id` integer, required

## Query parameters

- `source` 'legacy' | 'activity-map', nullable

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/claimkit/apis/claimkit-api.md) - [All operations](https://skmtc.dev/claimkit/apis/claimkit-api/llms.txt) - [OpenAPI document](https://skmtc.dev/claimkit/apis/claimkit-api/revisions/94dc85ba5326?raw)