POST to http://localhost:8181/restconf/config/opendaylight-inventory:nodes/node/1 with data:
{
"id": 1,
"node-connector": [

{ "id": "nc1" }

,

{ "id": "nc2" }

,

{ "id": "nc3" }

],
"connected": "true"
}

returns 400 Bad requests with error message:
{
"errors": {
"error": [

{ "error-type": "protocol", "error-tag": "malformed-message", "error-message": "Error parsing input: Result was already set." }

]
}
}

POST to same URI with data:
{
"id": 1
}
goes through ok (response 204 No content)