30440: Toll Free verification rejection - Unknown Error
PROGRAMMABLE MESSAGING
ERROR
The Toll-Free phone number verification submission has been reviewed and it was rejected. The toll-free phone number cannot be verified due to an unknown error.
Unknown
Contact Twilio Customer Support
Toll-Free best practices can be found at https://support.twilio.com/hc/en-us/articles/360038172934-Information-and-best-practices-for-using-Toll-Free-SMS-and-MMS-in-the-US-and-Canada