---
title: "Changes to Execute Workflow Async (External)"
method: POST
path: "/workflow/execute/external/{workflowId}/async"
---

# Changes to Execute Workflow Async (External)

`POST /workflow/execute/external/{workflowId}/async`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 9 revisions.

- **2026-09-02** `2d2243af28b0`: 2 info

## Changes

- **2026-09-02** `2d2243af28b0`: 2 info
  - added the new optional `header` request parameter `Idempotency-Key`
  - added the non-success response with the status `409`

---

[Operation](https://skmtc.dev/laminar/apis/laminar-api/docs/workflow/execute/external/:workflowId/async/post.md) - [API](https://skmtc.dev/laminar/apis/laminar-api.md) - [Page](https://skmtc.dev/laminar/apis/laminar-api/changes/workflow/execute/external/:workflowId/async/post)