Updated Interface wan 2 (Etag 3 -> 4).
   Updating Spoke HA for Element LNWO6-SDW-A.
ERROR: Element Spoke HA 15675668628700135 Update failed: 
REQUEST: PUT /v2.2/api/tenants/xxxx/elements/xxxx
REQUEST HEADERS:
	User-Agent: python-requests/2.22.0 (CGX SDK v5.1.1b1)
	Accept-Encoding: gzip, deflate
	Accept: application/json
	Connection: keep-alive
	Content-Type: application/json
	Cookie: AUTH_TOKEN="<SENSITIVE - NOT SHOWN BY DEFAULT>"
	Content-Length: 577
REQUEST BODY:
{
    "id": "15675668628700135",
    "_etag": 8,
    "_schema": 0,
    "site_id": "15675667910410130",
    "name": "LNWO6-SDW-A",
    "description": null,
    "cluster_insertion_mode": null,
    "cluster_member_id": null,
    "l3_direct_private_wan_forwarding": true,
    "l3_lan_forwarding": true,
    "network_policysetstack_id": null,
    "priority_policysetstack_id": null,
    "spoke_ha_config": {
        "cluster_id": "15675667954390003",
        "enable": true,
        "priority": 200,
        "source_interface": "15675669038750081",
        "track": {
            "interfaces": [
                {
                    "interface_id": "15675669018860106",
                    "reduce_priority": 60
                }
            ]
        }
    },
    "tags": null,
    "sw_obj": null
}

RESPONSE: 400 Bad Request
RESPONSE HEADERS:
	Date: Wed, 04 Sep 2019 03:15:38 GMT
	Content-Type: application/json; charset=utf-8
	Content-Length: 287
	Connection: keep-alive
	Server: nginx
	Content-Security-Policy: default-src 'self'
	X-Content-Type-Options: nosniff
	X-Frame-Options: DENY
	X-Permitted-Cross-Domain-Policies: master-only
	X-XSS-Protection: 1; mode=block
RESPONSE DATA:
{
    "_etag": 0,
    "_content_length": "0",
    "_schema": 0,
    "_created_on_utc": 0,
    "_updated_on_utc": 0,
    "_status_code": "400",
    "_request_id": "1567566938190022399992238740994618573774",
    "_error": [
        {
            "code": "INVALID_JSON_COMMON_ATTR_MISMATCH",
            "message": "\"Schema or _etag attribute in input JSON is invalid.\""
        }
    ]
}