Why does entity_id have an asterisk in the field description?

When examining a script that was filtered in the entities tab, if I select the properties/settings wheel the Entity ID field has a asterisk/* next to it. Why?

Unclear, post a screenshot.

This happens on my ESPHOME devices as well. And timers, I just noticed there are two,fields with *.

Strange

Means - mandatory field.

Doh! I looked but didn’t see any explanations .