使用Microsoft Graph将成员添加到通讯组列表

我正在给 https://graph.microsoft.com/beta/groups/my_group_id_here/members/ $ref并传递以下主体:

{
  "@odata.id": "https://graph.microsoft.com/beta/directoryObjects/user_id_here"
}

我得到以下回复:

{
    "error": {
        "code": "Request_BadRequest",
        "message": "Unable to update the specified properties for objects that have originated within an external service.",
        "innerError": {
            "request-id": "f39af99e-2ee9-406e-b5e0-9ace5bfaf123",
            "date": "2018-08-13T17:35:38"
        }
    }
}

谢谢!