13242: Dial->SIP: Invalid sendDigits value

This warning appears when the sendDigits attribute used with <Dial><Sip> contains characters outside 0 through 9, *, #, or w. Use sendDigits to send DTMF digits after the SIP call connects.

• The sendDigits value includes a character that is not supported for <Dial><Sip>. Only 0 through 9, *, #, and w are valid.
• The value uses W or A through D, which are accepted in some outbound call flows but are not valid for <Dial><Sip>.
• Your application passes sendDigits through a URL or query string and does not preserve characters such as # correctly before generating the TwiML.

• Update the sendDigits value so it contains only 0 through 9, *, #, and w.
• If you need pauses, use lowercase w. Do not use uppercase W in <Dial><Sip>.
• Review the code or template that generates your <Dial><Sip> TwiML and remove any unsupported characters before returning the response.
• If your application builds the value from a URL parameter, URL-encode # and verify the final TwiML contains the exact digits you expect.

• TwiML <Sip> noun
• TwiML <Dial> verb
• Making SIP calls