Webhook integration suddenly returning 401

Scenario

An automation or ticketing integration worked for months and now only returns unauthorized responses.

Recommended Resolution Path

1. Check for expired API keys, secret rotation, or changed callback signing requirements.
2. Review whether the integration user lost a role or permission scope.
3. Compare the exact request headers against the vendor documentation and recent change logs.
4. Rotate the secret cleanly and update all dependent systems together.

Technician Notes

Confirm the business impact, document the root cause, and capture any preventative follow-up in the PSA or client knowledge base.