32214: SIP: Invalid <Dial><Sip>

This warning appears when you use <Dial><Sip> to target a Twilio SIP Domain that is not available to the account handling the call. You can only dial a Twilio SIP Domain in the same subaccount or in that subaccount's master account. Twilio SIP Domains are account-scoped, and subaccounts can create subdomains of SIP Domains in the master account. Registered SIP endpoints must also use the same username and domain that were registered for that SIP address of record.

• The <Sip> target points to a Twilio SIP Domain that belongs to a different account instead of the same subaccount or its master account.
• The call is trying to reach a registered SIP endpoint on a SIP Domain that is not provisioned in the same subaccount as the Twilio number or call flow.
• The username or domain in <Sip> does not match the username and SIP Domain that were used to register the endpoint.

• Register the SIP endpoint on a SIP Domain in the same subaccount as the call, or use a SIP Domain that exists in the master account for that subaccount.
• Update the <Sip> target so it matches the registered address of record, such as alice@yourdomain.sip.twilio.com, and confirm that both the username and domain are correct.
• If you are routing a call from a Twilio phone number to a registered SIP endpoint, provision the phone number in the same subaccount as the SIP Domain you want to reach.

• TwiML <Sip> noun
• SIP Registration
• Send SIP to Twilio