software issue: DMI schemas or Device Management Interface
https://kb.juniper.net/InfoCenter/index?page=content&id=KB28915&cat=JUNOS_SPACE&actp=LIST
Mismatch with device OS version = does not match the default value on the JS/SD
- Log into the Junos Space WebGUI.
- Go to Platform > Administration > DMI Schemas.
- Select the required schema version, right-click, then select Set Default Schema. ( If not available may need to update the schema )