无法扩展大项目附件：ErrorMessageSizeExceeded

Question

我正在使用Graph API从我的office365帐户备份所有日历事件，并且在下载大小约为45MB的大itemAttachment时遇到问题。

它是Graph API的限制吗？ 有什么办法可以解决这个问题？

这是详细的请求和响应。

项目附件信息

GET https://graph.microsoft.com/v1.0/users/{user_id}/events/{event_id}/attachments/{attachment_id}

{
    "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('{user_id}')/events('{event_id}')/attachments/$entity",
    "@odata.type": "#microsoft.graph.itemAttachment",
    "id": "{attachment_id}",
    "lastModifiedDateTime": "2018-09-14T19:34:15Z",
    "name": "XXXXXX",
    "contentType": null,
    "size": 47693785,
    "isInline": false
}

展开itemAttachment

GET https://graph.microsoft.com/v1.0/users/{user_id}/events/{event_id}/attachments/{attachment_id}?$expand=microsoft.graph.itemattachment/item

{
    "error": {
        "code": "ErrorMessageSizeExceeded"
        "message": "The message exceeds the maximum supported size., The message exceeds the maximum supported size.",
        "innerError": {
            "request_id": "bbc2b732-99f6-4cc5-8e75-c07b61efd0af", 
            "date": "2019-04-11T02:58:11"
        }
    }
}