80406: Phone Number Did Invalid

This warning occurs when your Proxy request includes an invalid phone number value for a Proxy phone number. When you add a phone number to a Proxy Service, send either PhoneNumber in E.164 format or Sid for the Twilio IncomingPhoneNumber resource on your account.

• The PhoneNumber value is not formatted in E.164, which requires a leading +, country code, and subscriber number.
• The phone number contains invalid characters or is incomplete.
• The request uses a phone number value that does not match the Twilio number you intended to add to the Proxy Service. Proxy phone number pools use Twilio phone numbers associated with the service.

• Update the PhoneNumber value to valid E.164 format, for example +14155551234.
• If you already know the Twilio number resource SID, use Sid instead of PhoneNumber when you add the number to the Proxy Service.
• Confirm that the number you are adding is a Twilio phone number on your account and that you are adding it to the correct Proxy Service.

• Proxy PhoneNumber resource
• Proxy Quickstart
• What is E.164?