How to Diagnose API Requests That Work Until a Security Token Rotates

An integration can fail after token rotation if one service still uses a cached credential or the new token has different permissions or audience.

What to check

Check token expiry, issuer and audience, scopes, secret deployment, cache behavior, clock skew, and which integration instances have reloaded credentials. Never place token values in logs.

Recommended next step

Coordinate rotation with overlap where supported, then verify all instances use the intended credential. Informatix Systems can assess API integration security and reliability.