Locked account

When starting an authentication flow with the initial REST call of password/check/

HTTP Request - /public/authentication/password/check/

POST https://iam-host.com/auth/rest/public/authentication/password/check
{
    "username": "john.doe@ergon.ch",
    "password": "password0"
}

HTTP Response - /public/authentication/password/check/

The response is a HTTP Error 403 with a code explaining the reason:

403 FORBIDDEN
{
    "meta": {
        "type": "jsonapi.metadata.document",
        "timestamp": "2018-12-04T09:08:03.242Z"
    },
    "errors": [
        {
            "id": "3243:7975",
            "status": 403,
            "code": "USER_LOCKED"
        }
    ]
}