Create host with snmp interface and put wrong snmp credentials to interface. Link some snmp template
All snmp agent items have "Authentication failure (incorrect password, community or key)" with unsupported state, but host is marked as GREEN (available)
This may be logical (the interface is available), but in fact leads to problems and errors of perception, because the green status means that data from the interface can be collected. Also in previous versions, the accessibility icon turned red in case of problems with credentials