| Code | Description |
|---|---|
| E71001 | length exceeds the upper limit |
| E71002 | duplicate group nam |
| E71003 | illegal device id |
| E71004 | cannot find group |
| E71005 | the group cannot be outside the group |
| E71006 | unexpected device id |
| E71007 | clear group device fail |
| E71008 | the modified group name already exists |