13241: Dial->SIP: Invalid method value

You receive this warning when the method attribute on <Dial><Sip> is set to a value other than GET or POST. On <Sip>, the method attribute controls which HTTP method Twilio uses when requesting the TwiML URL specified by the url attribute. If you omit method, Twilio uses POST by default.

• Your <Sip> noun includes method with a value other than GET or POST.
• Your application sets a url on <Sip> and passes an unsupported HTTP method for the request to that URL.
• Your TwiML is generated dynamically, and the code that builds <Dial><Sip> is sending an invalid method value instead of using a supported value or the default POST.

• Update the <Sip> noun to use method="GET" or method="POST".
• If you do not need to override the HTTP method, remove the method attribute and let Twilio use the default POST.
• Review the code or template that generates your TwiML and confirm the url and method values on <Sip> are valid before you return the response.

• TwiML Voice: <Sip>
• TwiML Voice: <Dial>
• Making SIP Calls