Unreachable destination (Error 30003)
The phone number doesn't exist or isn't available. Verify that the number is correct and active.
Verification required for Toll-Free numbers
If you see "Verification required to continue using the Toll-free number," follow the verification instructions in your Twilio dashboard. Verification typically takes 3–5 business days.
For more details, see Twilio's toll-free verification guide.
Other error codes
For other errors, check Twilio's error code reference for details about what went wrong.