API returns 401 unauthorized

Verify credentials, scopes, expiry, and token refresh without exposing secrets.

How to troubleshoot

1. Reproduce the issue with non-sensitive test data and record the expected versus actual result.
2. Verify credentials, scopes, expiry, and token refresh without exposing secrets.
3. Test the fix in staging, check logs, and deploy with a rollback plan.

When to get professional assistance

If these steps do not resolve the issue, or you suspect failing hardware, data loss, a security incident, or a production-system problem, consider qualified technical support. Back up important data where possible and obtain authorization before changing business systems.

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