---
title: "Cancel a running approval"
method: POST
path: "/api/v1/rest/workflow/instances/{id}/cancel"
tags: ["Workflows"]
---

# Cancel a running approval

`POST /api/v1/rest/workflow/instances/{id}/cancel`

## Request

- Base URL: `https://api.custodo.ai`
- URL: `https://api.custodo.ai/api/v1/rest/workflow/instances/{id}/cancel`
- Auth: HTTP bearer

Recalls a run that is still in progress — every pending task is superseded and no further decision can move it. Only the member who started the run, or a monitor (workflow:manage), may cancel it, and only while it is still `running`. This does not undo a decision already recorded.

**Examples**

- Never mind, pull that request back
  `POST /api/v1/rest/workflow/instances/11111111-2222-4333-8444-555555555555/cancel`

## Path parameters

- `id` string, uuid, required

## Headers

- `X-Tenant-Id` string, uuid

## Response `200`

Done. `data` is the tool’s own answer.

- RestResult
  - `ok` true, required
  - `data` unknown, required

## Other responses

- `400`: The arguments did not validate: `error.message` names the field, what it expects and what arrived.
- `401`: No API key, or one that is malformed, unknown, revoked or expired.
- `403`: The call never ran: the module is off for this organisation, the credential lacks the permission or the module, the tier does not cover it, or the tool is destructive and the key was not minted for that.
- `404`: Nothing with that id in this organisation.
- `409`: The record is in a state that does not allow it — under legal hold, already sent, already closed. `error.code` says which.
- `422`: The tool ran and refused, in a sentence of its own (`TOOL_REFUSED`): the message says what to change. Retrying the same call will not help.
- `429`: The API key has spent its minute, or its day. Every request a key makes counts. See `Retry-After`.

---

[API](https://skmtc.dev/custodo/apis/custodo-integrazioni.md) · [All operations](https://skmtc.dev/custodo/apis/custodo-integrazioni/llms.txt) · [OpenAPI document](https://skmtc.dev/custodo/apis/custodo-integrazioni/revisions/16d336d3ec2a?raw)