无法执行MS Graph后端请求CreateGroupRequest-GroupCreationLimitExceeded

Question

当我尝试在MS Graph中创建组时，出现以下错误：

{  
   "errorCode":"GroupCreationLimitExceeded",
   "message":"Failed to execute MS Graph backend request CreateGroupRequest. The server failed to respond correctly. Response Code: Forbidden, Reason: Reason: Forbidden, Correlation headers: request-id: 9a1e183f-a04a-4e34-8549-50ce72f0df16\r\nclient-request-id: 9a1e183f-a04a-4e34-8549-50ce72f0df16\r\nx-ms-ags-diagnostic: {\"ServerInfo\":{\"DataCenter\":\"West US\",\"Slice\":\"SliceC\",\"Ring\":\"5\",\"ScaleUnit\":\"001\",\"Host\":\"AGSFE_IN_10\",\"ADSiteName\":\"WUS\"}}\r\nDuration: 140.1325\r\nDate: Fri, 17 Aug 2018 19:51:03 GMT\r\n"
}

请求网址：

https://graph.microsoft.com/beta/groups

请求正文为：

{  
   "resourceBehaviorOptions":[  
      "WelcomeEmailDisabled",
      "SubscribeMembersToCalendarEventsDisabled",
      "HideGroupInOutlook"
   ],
   "resourceProvisioningOptions":[  
      "Team"
   ],
   "mailNickName":"Ievgengo_Team_0bbf8f48",
   "displayName":"Ievgengo_Team_0bbf8f48",
   "visibility":"Private",
   "mailEnabled":true,
   "securityEnabled":false,
   "classification":"HBI",
   "owners@odata.bind":[  
      "https://graph.microsoft.com/v1.0/users/656a868f-b2ed-42da-a18b-10b3fe6817a9"
   ],
   "groupTypes":[  
      "Unified"
   ]
}

用户没有那么多组。有人知道为什么会这样吗？