13217: Dial: Invalid record value

Twilio raises this warning when your <Dial> verb includes a record attribute value that Twilio does not support. This error returns the message record must be "true" or "false". For <Dial>, supported recording values are do-not-record, record-from-answer, record-from-ringing, record-from-answer-dual, and record-from-ringing-dual. For backward compatibility, true maps to record-from-answer and false maps to do-not-record.

• Your <Dial> verb sets record to a value that is not one of the supported recording options.
• Your application sends a typo, unexpected capitalization, or extra characters in the record value, so Twilio cannot match it to a valid option.
• Your application builds TwiML dynamically and the variable used for record resolves to an empty or unsupported value at runtime.

• Update the <Dial> verb so the record attribute uses a supported value such as do-not-record, record-from-answer, record-from-ringing, record-from-answer-dual, or record-from-ringing-dual.
• If you use the legacy boolean form, set record="true" to use record-from-answer, or set record="false" to use do-not-record.
• Review any code or template logic that generates your TwiML and confirm it outputs the exact record value you expect before Twilio processes the <Dial> verb.

• TwiML Voice: <Dial>
• Recordings resource
• How to Record a Phone Call with Twilio