How to Diagnose an API Integration That Stops After a Credential Expiration

An integration can stop without a code deployment when an API key, client secret, certificate, or refresh token expires. The first visible symptom may be a backlog of failed updates.

What to check

Check credential expiry and rotation notices, authentication errors, token refresh behavior, secret version, and the last successful request. Identify whether credentials are shared by multiple integration components.

Recommended next step

Rotate credentials through a tested process, verify a successful request, and safely replay queued work. Add expiry monitoring and an owner for renewal so future changes do not depend on emergency discovery.

How Informatix Systems can help

Informatix Systems provides custom software and API integration services. We can review the affected systems and workflow, identify likely causes, and help plan a practical correction. Contact us with the platform involved, when the issue began, and non-sensitive error details.