---
title: "Changes to Start a training run"
method: POST
path: "/v2/workspaces/{workspace_id}/training-runs"
---

# Changes to Start a training run

`POST /v2/workspaces/{workspace_id}/training-runs`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 4 of 42 revisions.

- **2026-10-20** `326f3bcdabcc`: 7 info
- **2026-10-11** `2d86d473cda6`: 2 info
- **2026-10-10** `9425712a1f7e`: 2 info
- **2026-09-21** `0aa077697d76`: 2 info

## Changes

- **2026-10-20** `326f3bcdabcc`: 7 info
  - added the required property `error_code` to the response with the `401` status
  - added the required property `error_code` to the response with the `403` status
  - added the required property `error_code` to the response with the `404` status
  - added the required property `error_code` to the response with the `409` status
  - added the required property `error_code` to the response with the `422` status
  - added the required property `error_code` to the response with the `429` status
  - added the required property `error_code` to the response with the `500` status
- **2026-10-11** `2d86d473cda6`: 2 info
  - the endpoint scheme security `serviceAccount` was added to the API
  - the security scope `reference_sets:write` was removed from the endpoint's security scheme `oauth2`
- **2026-10-10** `9425712a1f7e`: 2 info
  - the endpoint scheme security `bearerAuth` was added to the API
  - the endpoint scheme security `oauth2` was added to the API
- **2026-09-21** `0aa077697d76`: 2 info
  - added the new optional request property `webhook`
  - added the optional property `expected_events` to the response with the `202` status

---

[Operation](https://skmtc.dev/layer/apis/layer-rest-api/docs/v2/workspaces/:workspace_id/training-runs/post.md) · [API](https://skmtc.dev/layer/apis/layer-rest-api.md) · [Page](https://skmtc.dev/layer/apis/layer-rest-api/changes/v2/workspaces/:workspace_id/training-runs/post)