Greetings, there is a small typo in the documentation on this page -
https://www.zabbix.com/documentation/6.0/en/manual/appendix/items/activepassive#getting-the-list-of-items
The Host Interface field is listed as "hostinterface". It should be "interface".
Here's the related line in the agent source code.
https://git.zabbix.com/projects/ZBX/repos/zabbix/browse/src/go/internal/agent/serverconnector/serverconnector.go#73