80605: Proxy Identifier Not In Service

This warning means the Proxy Identifier you supplied is not part of the Proxy Service handling the request. In Proxy, phone numbers are associated directly with a specific Service, and when you set proxyIdentifier for a Participant, that number must already be in that service's phone number pool. If you omit proxyIdentifier, Proxy selects a number from the pool automatically.

• You provided proxyIdentifier for a Participant, but that Twilio number was never added to the target Proxy Service.
• The number is associated with a different Proxy Service. A Twilio number can be associated with only one Proxy Service at a time.
• The request used the wrong Service or Session SID, so Proxy checked a different service than the one that contains the number.

• Add the Twilio number to the correct Proxy Service before you assign it as proxyIdentifier.
• If you do not need to force a specific masked number, remove proxyIdentifier and let Proxy select an available number from the service's pool.
• Verify that you are using the intended Service and Session SIDs, then retry with a number that belongs to that service. This follows from the way Participant requests are scoped to a service and session, and the way Proxy numbers are attached to a service.

• Proxy Participant resource
• Proxy Phone Number resource
• Proxy Quickstart