无法从SiteCollection获取DataLocationCode值的Graph API问题求助

我尝试获取任意SharePoint站点的DataLocationCode值，在Graph Explorer中测试了多种OData查询语法（包括简单调用、$select、嵌套$select、$expand）均未成功。我通常使用C# SDK进行简单调用，此次需获取该值用于Search端点，同时借此学习Microsoft Graph的OData查询字符串。以下是各调用及返回结果：

简单调用 #

请求：

GET https://graph.microsoft.com/v1.0/sites/{siteid}

返回：

{
    "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#sites/$entity",
    "@microsoft.graph.tips": "Use $select to choose only the properties your app needs, as this can lead to performance improvements. For example: GET sites('<key>')?$select=displayName,error",
    "createdDateTime": "2023-08-10T15:14:45.583Z",
    "description": "a_description",
    "id": "tenant.sharepoint.com,some_guid,some_guid",
    "lastModifiedDateTime": "2023-08-20T12:10:08Z",
    "name": "P008-Baltik",
    "webUrl": "https://tenantname.sharepoint.com/sites/some_name",
    "displayName": "some site name",
    "root": {},
    "siteCollection": {
        "hostname": "tenantname.sharepoint.com"
    }
}

$select调用 #

请求：

GET https://graph.microsoft.com/v1.0/sites/{siteid}?$select=siteCollection

返回：

{
    "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#sites(siteCollection)/$entity",
    "siteCollection": {
        "hostname": "tenant.sharepoint.com"
    }
}

嵌套$select调用（尝试） #

请求：

GET https://graph.microsoft.com/v1.0/sites/{siteid}?$select=siteCollection/dataLocationCode

返回：

{
    "error": {
        "code": "BadRequest",
        "message": "Select options are not supported.",
        "innerError": {
            "date": "2023-08-28T14:58:15",
            "request-id": "some_guid",
            "client-request-id": "some_guid"
        }
    }
}

$expand调用 #

请求：

GET https://graph.microsoft.com/v1.0/sites/{siteid}?$expand=siteCollection&select=dataLocationCode

返回：

{
    "error": {
        "code": "BadRequest",
        "message": "Parsing OData Select and Expand failed: Property 'siteCollection' on type 'microsoft.graph.site' is not a navigation property or complex property. Only navigation properties can be expanded.",
        "innerError": {
            "date": "2023-08-28T15:18:10",
            "request-id": "some_guid",
            "client-request-id": "some_guid"
        }
    }
}

内容的提问来源于stack exchange，提问作者Ama