使用Microsoft Graph API创建Bookings预约时遇502 BadGateway错误求助

调用POST https://graph.microsoft.com/v1.0/solutions/bookingBusinesses/{id}/appointments接口创建Bookings预约时，持续返回无有效提示的502错误，错误响应如下：

{
  "message": "BadGateway",
  "innerError": {
    "error": {
      "code": "UnknownError",
      "message": ""
    }
  }
}

已排查内容 #

• 确认访问令牌有效，且权限范围配置正确
• 核对过Booking企业ID、服务ID、员工ID均无误
• 最初使用Microsoft Docs提供的示例请求体发起请求，未成功
• 后来以通过Bookings前端手动创建的现有预约的GET请求返回JSON为模板构造请求体，仍然失败
• 同一访问令牌可正常调用取消、更新现有预约的Graph API接口

当前使用的请求体 #

POST https://graph.microsoft.com/v1.0/solutions/bookingBusinesses/EXAMPLE@Example.com/appointments
Content-type: application/json

{
  "@odata.type": "#microsoft.graph.bookingAppointment",
  "customerName": "Filip",
  "customerEmailAddress": "example@g.com",
  "customerTimeZone": "Eastern Standard Time",
  "serviceId": "XYZ",
  "startDateTime": {
    "dateTime": "2025-06-14T13:00:00Z",
    "timeZone": "UTC"
  },
  "endDateTime": {
    "dateTime": "2025-06-14T14:00:00Z",
    "timeZone": "UTC"
  },
  "staffMemberIds": [
    "XYZ"
  ]
}

有没有人遇到过类似的创建预约时的502 UnknownError问题？能否分享一个可成功执行的POST请求体示例？

内容的提问来源于stack exchange，提问作者Filip