13236: Dial->Conference: Invalid Conference Sid

This warning occurs when you try to connect to a conference by ConferenceSid, but the SID does not identify an existing conference or the conference has already been completed. Conference SIDs use the CF prefix, and a ConferenceSid must refer to an active conference.

• The ConferenceSid is mistyped, truncated, or otherwise invalid.
• The ConferenceSid does not belong to a conference in your account.
• The ConferenceSid refers to a conference that has already ended and is now completed.
• Your application reused a stale ConferenceSid from an earlier call flow instead of the current active conference.

• Verify that you are passing the correct ConferenceSid for the conference you want to join. A valid conference SID starts with CF.
• Check the conference status before you reuse a stored SID. If the conference has been completed, create or reference a new active conference instead.
• If you want Twilio to create a conference when one does not already exist, use a named conference with <Conference> or use FriendlyName when creating a participant.
• Update your application logic to store the current active conference identifier and avoid reusing old conference SIDs after the conference ends.

• TwiML Voice: <Conference>
• Conferences resource
• Conference Participants subresource