Troubleshooting steps
Review request parameters, verify account settings, check Twilio documentation
API Error Codes
21212 – Invalid 'From' Phone Number
Source phone number is invalid
Details
Source phone number is invalid when using Twilio API. Check your request parameters and account settings.
Error typeerror
MeaningSource phone number is invalid
Typical causesInvalid parameter, account issue, service restriction
SolutionsReview request parameters, verify account settings, check Twilio documentation
Severitymedium
Catalog references
Where this appears
Twilio21212
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FAQ
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How to fix 21212?
21212 indicates source phone number is invalid. Review Twilio API documentation for specific resolution.
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