Hello,

Default template "MSSQL by Zabbix agent 2" as mentioned in name is monitored by Agent, but in template there is still a simple check type of item:
https://git.zabbix.com/projects/ZBX/repos/zabbix/browse/templates/db/mssql_agent2/template_db_mssql_agent2.yaml?at=refs%2Fheads%2Frelease%2F7.0#1843-1845

This can generate problem that trigger related to this item will fire, if end user set in user macro of URI value like "localhost",
Since check will be done by either proxy/server, trigger will fire, and event will be generated.

It's worth to consider changing this item type to "zabbix agent" if possible.