Game concept
State Rite
From the game's encyclopedia
State Rite is the Rite supported and condoned by an Administrative Government. This rite is attached to the Title and not to any one specific Character. It is easier to convert characters in the Realm to the state rite and very difficult to convert them away from it.
Only the Ruler of an Administrative Realm may change the State Rite, but Governors may freely convert to it.
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.
State Rite is an entry of Crusader Kings III's in-game encyclopedia. The game explains it: "State Rite is the Rite supported and condoned by an Administrative Government." It is part of Rite. Patch 1.20.1.2, from game/common/game_concepts/00_game_concepts.txt and game/localization/english/game_concepts_l_english.yml.
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.