What does an "unsupported" item state in Zabbix indicate?

An "unsupported" item state in Zabbix indicates that the item is not being processed properly due to configuration issues. This means that Zabbix has encountered a problem preventing it from obtaining data for that item, which could stem from various reasons such as incorrect item configuration, unresolvable keys, or issues with the underlying agent or server. When an item is marked as unsupported, it signals that the monitoring setup requires attention, as the expected data collection and processing are not occurring effectively.

Additionally, while an unsupported item does not imply that it is actively monitored or configured correctly, it serves as an important diagnostic indicator that prompts the administrator to investigate the specific cause of the issue to ensure proper functioning of the monitoring setup.