Warning - 14101

"To" Attribute is Invalid

The To attribute does not appear to be a phone number that you can SMS.

Possible Causes

  • Invalid formatted number
  • SMSing an un-validated number while using a Trial Account
  • Attempting to send a message where the "To" number is the same as the "From" number

Possible Solutions

  • Check the number and make sure it is a valid 10 digit domestic phone number
  • Confirm you have validated this number, if you are still using a Trial account, or upgrade your account
  • Contact Twilio customer support to inquire further.