Game concept
Extort Subjects Decision
The game also links it as Extort Subjects.
From the game's encyclopedia
The game's text for patch 1.20.1.2. Words in blue are entries of the encyclopedia: hover one to read it, as in the game.
Extort Subjects Decision is an entry of Crusader Kings III's in-game encyclopedia. The game explains it: "A Decision offering different opportunities to demand extra Gold from subjects, at a different cost..." It is part of Decision. The game also links it as Extort Subjects. Patch 1.20.1.2, from game/common/game_concepts/00_game_concepts.txt and game/localization/english/game_concepts_l_english.yml.
for a guide, post or blog
Source: game/common/game_concepts/00_game_concepts.txt, game/localization/english/game_concepts_l_english.yml and the English localisation, Crusader Kings III 1.20.1.2.