11100: Invalid URL format

This error occurs when you configure or submit a URL that isn't in a valid absolute format. Use a fully qualified http:// or https:// URL that Twilio can reach over the public Internet for phone number webhooks, outbound call instructions, and TwiML callback URLs.

• You configured an invalid webhook URL for a phone number.
• You passed an invalid URL in an outbound call request.
• You used an invalid URL in a <Play> or <Redirect> verb body.
• You provided an invalid URL for a verb action attribute.
• You didn't provide a URL for the <Record> verb action attribute when modifying a live call.
• You included unsupported characters in the authentication portion of the URL.

• Submit a fully qualified URL that includes the protocol, hostname, path, and properly URL-encoded query parameters.
• Make sure the endpoint is publicly reachable. Webhook requests can't be sent to a private or local URL directly.
• If you are creating an outbound call, provide a valid absolute Url or send Twiml directly instead of having Twilio fetch instructions from a URL.
• Review any sms_url, voice_url, or verb action value you configured and remove malformed URL components or unsupported authentication characters.
• When you test locally, expose your application through a public tunnel and use the generated public HTTPS URL.

• Webhooks Overview
• IncomingPhoneNumber resource
• Call resource