Tracking API returns status 200 response for invalid tracking number

[e4basil]

Request URL:

https://onlinetools.ups.com/api/track/v1/details/1Z5629230309413682xxxx

Response (200 success):

{
    "trackResponse": {
        "shipment": [
            {
                "inquiryNumber": "1Z5629230309413682xxxx",
                "warnings": [
                    {
                        "code": "TW0001",
                        "message": "Tracking Information Not Found"
                    }
                ]
            }
        ]
    }
}

As per the documentation it will 404 error