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Invalid "To" attribute

WARNING: 14101

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"To" Attribute is Invalid

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

Possible Causes

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  • Invalid formatted number
  • SMSing an un-validated number while using a Trial Account
  • 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.

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