13239: Dial->Conference: Invalid Trim Value

Twilio returns this error when the <Conference> noun receives an invalid trim value. The documented trim values for <Conference> are trim-silence and do-not-trim.

• The <Conference> noun includes a trim attribute with a value other than trim-silence or do-not-trim.

• Update the <Conference> noun so trim is set to trim-silence or do-not-trim.
• Remove the trim attribute if you want Twilio to use the documented default value of trim-silence.

• TwiML Voice: <Conference>