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Warning 13223

Product: Programmable Voice

WARNING - 13223

Dial: Invalid phone number format

Phone Numbers must be in E.164 format. E.164 numbers are formatted [+] [country code] [subscriber number including area code] and can have a maximum of fifteen digits. Phone Numbers must be in E.164 format. E.164 numbers are formatted [+] [country code] [subscriber number including area code] and can have a maximum of 15 digits.

Possible Causes

  • The phone number you are attempting to dial is not in E.164 format
  • The <Number> noun inside your <Dial> TwiML instructions is not present
  • You are attempting to dial something that is not a phone number

Possible Solutions

Check the format of the phone number inside your <Dial><Number> TwiML.

Verify that the number is in E.164 format: - Includes the country code - Includes the area code - Does not exceed 15 digits - Does not include any invalid characters, like hyphens or parentheses

In your TwiML instructions, the phone number must be between the opening and closing <Number> tags, which are nested within <Dial>'s opening and closing tags:

<Dial><Number>+15555555555</Number></Dial>

If you are attempting to <Dial> an SDK end-user, ensure you're using the <Client> noun inside your <Dial> tags.

If you are attempting to <Dial> a SIP endpoint, ensure you're using the <Sip> noun inside your <Dial> tags.

For more information, read the <Dial> docs.

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