14110: Invalid Verb for SMS Reply

This warning appears when your webhook returns a TwiML verb that Programmable Messaging does not support for a message reply. In a Messaging TwiML <Response>, use Messaging verbs only. Use <Message> to send a reply or <Redirect> to transfer control to another Messaging TwiML document. TwiML verb names are case sensitive.

• Your webhook returned a Voice or Fax TwiML verb instead of a Messaging verb. SMS message responses must include Programmable Messaging TwiML verbs only. (help.twilio.com)
• Your response used an unsupported or misspelled verb name. TwiML verb names are case sensitive, so values such as <message> are invalid.
• Your TwiML mixed verbs from different communication types in the same <Response>. Twilio does not support mixing Voice and Messaging verbs in one response. (help.twilio.com)
• Your response used invalid TwiML structure, such as placing verbs outside <Response> or nesting verbs inside <Message> or <Redirect>.

• Return a valid Messaging TwiML <Response> and use supported Messaging verbs only.
• Replace unsupported verbs with <Message> when you want to send a reply to the incoming sender.
• Use <Redirect> when you want Twilio to request another Messaging TwiML document.
• Check tag names, capitalization, and nesting. Use <Message> and <Redirect> exactly as documented, place them inside <Response>, and do not nest verbs inside <Message> or <Redirect>.
• If you need to receive the incoming message without sending a reply, return an empty <Response/> instead of another TwiML verb.

• TwiML for Programmable Messaging
• TwiML Message: <Message>
• TwiML SMS: <Redirect>