Steps to reproduce:

1. Use Agent2. Create item with nonexistent service using key service.info (e.g. service.info["test",state])
2. Click Test button and next Get value

Result:

See message "The specified service does not exist as an installed service." and missing value
Expected:
Documentation (Windows-specific item keys [Zabbix Documentation 5.0]) says that there should be 255 value for nonexistant services, but I get error. Monitored host is Windows Server 2019 x64 with Zabbix Agent 2 (version 5.0.9). Zabbix Server version is 5.0.9.

Additionally can you advise how to trigger action if on new Windows host there isn't specific service?