# POST /api/workflows.stepFailed stops working

Calls to POST /api/workflows.stepFailed on Slack stopped working on September 26, 2024.

- API: Slack (slack.com)
- Kind: Endpoint removal
- Announced: August 22, 2023
- Takes effect: September 26, 2024
- Calls after that day: fail
- Calls it hits: `POST /api/workflows.stepFailed`
- Source: [Announcement](https://docs.slack.dev/changelog/2023-08-workflow-steps-from-apps-step-back)
- Page: https://www.okapi.bot/providers/slack/breaking-changes/post-api-workflows-stepfailed-stops-working/

## What to use instead

Rebuild Steps from Apps as custom functions for the new Workflow Builder.