Troubleshooting steps
Verify Account SID and Auth Token, check credentials in request
API Error Codes
20001 – Unauthorized
Authentication failed
Details
Your Twilio credentials are invalid or missing.
Error typeerror
MeaningAuthentication error
Typical causesInvalid Account SID, invalid Auth Token, missing credentials
SolutionsVerify Account SID and Auth Token, check credentials in request
Severityhigh
Catalog references
Where this appears
Twilio20001
Utilities
Copy-paste helpers
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FAQ
Common questions
Where are my credentials?
Find your Account SID and Auth Token in the Twilio Console dashboard.
Community
Discussion & Experiences
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