Has advancement
Whether a player has completed an advancement, like minecraft:story/mine_stone.
A Minecraft element (a check) in Players. Needs the Basic plan or higher to go live; building and testing are free.
Example
When a player enters a region → If Has advancement minecraft:nether/root → Let them in.
Also called
advancement, achievement, completed, progress
Works as a data pack?
Partly. A data pack does most of it, and the editor tells you the difference.
What you give it
- Player