1. Open Run History
- Go to your sequence → click "Runs" tab
- Find the failed run (marked with a red indicator)
2. Inspect each step
- Click on the failed step to see:
- Input data — what data was sent to that step
- Output data — what the step returned
- Error message — the specific error
3. Common error types:
- Authentication error — reconnect the app
- Not found — the record or resource doesn't exist
- Rate limited — too many requests; add a delay step
- Validation error — check your data mapping
- Timeout — the external service took too long
4. Fix and retry
- Fix the issue (update mapping, reconnect, etc.)
- Click "Retry" to re-run from the failed step
Pro tip: Set up a notification sequence that alerts you on Slack/email when any sequence fails.