warning: the following keywords are unknown and will be ignored

[LazyLutra]

JSON essage (checkStr) :

{
    "addTarget_status": "0",
    "area_name": "",
    "code": 1,
    "data": [{"data1":"t1"},{"data2":"t2"}],
    "date": 20191111,
    "detail": "成功！",
    "month_id": 20191111,
    "periodShowFlag": "",
    "provId": "012",
    "report_id": "R20190102",
    "report_level": "5",
    "title_name": "title"
}

JSON schema message (schemaStr) :

{
    "properties": {
        "area_name": {
            "type": "string"
        },
        "code": {
            "type": "number"
        },
        "data": {
            "items": {
                "type": "string"
            },
            "type": "object"
        },
        "date": {
            "type": "number"
        },
        "detail": {
            "type": "string"
        },
        "month_id": {
            "type": "number"
        },
        "provId": {
            "type": "number"
        },
        "report_id": {
            "type": "string"
        },
        "report_level": {
            "type": "string"
        },
        "target_id": {
            "type": "string"
        },
        "target_name": {
            "type": "string"
        }
    },
    "required": [
        "code",
        "detail",
        "provId",
        "date",
        "data",
        "target_id",
        "target_name"
    ],
    "type": "object"
}

My validation code is :

		JsonSchemaFactory factory = JsonSchemaFactory.byDefault();
		
		JsonNode schemaNode = JsonLoader.fromString(schemaStr);
		JsonNode checkNode = JsonLoader.fromString(checkStr);
		
		JsonSchema schema = factory.getJsonSchema(schemaNode);
		
		ProcessingReport report = schema.validate(checkNode);

Using version 2.2.10

I get the error "warning: the following keywords are unknown and will be ignored: [addTarget_status, area_name, data, date, detail, month_id, periodShowFlag, provId, report_id, report_level, title_name]"

Why is it the case?