{"status":"error","http_code":422,"telnyx_response":{"errors":[{"code":"10016","title":"Phone number must be in +E164 format","source":{"pointer":"\/to"},"detail":"The 'to' parameter must be a phone number in +E164 format or a SIP endpoint."},{"code":"10000","title":"Invalid request","source":{"pointer":"\/custom_headers"},"detail":"The 'custom_headers' parameter is invalid. Please consult the documentation."}]}}