Start Claimant Faction

is_available = highest_held_title_tier > tier_barony
custom_description = {
	text = faction_can_join_create_in_another_faction
	is_a_faction_member = no
}
is_shown = scope:actor = {
	NOT = {
		scope:secondary_actor ?= this
	}
	scope:secondary_actor ?= liege
}

As written in game/common/character_interactions/00_vassal_interactions.txt.

NOT = {
	scope:actor = {
		has_truce = scope:secondary_actor
	}
}
scope:secondary_actor = {
	trigger_if = {
		limit = {
			NOT = {
				any_held_title = {
					any_claimant = { }
				}
			}
		}
		custom_description = {
			text = basic_claimant_found
			always = no
		}
	}
	trigger_else = {
		custom_description = {
			text = basic_capable_claimant_found
			any_held_title = {
				any_claimant = {
					is_incapable = no
				}
			}
		}
	}
	trigger_if = {
		limit = {
			exists = scope:landed_title
		}
		custom_description = {
			text = claimant_faction_already_exists
			subject = scope:landed_title
			object = scope:recipient
			NOT = {
				any_targeting_faction = {
					faction_type = claimant_faction
					special_character = scope:recipient
					special_title = scope:landed_title
				}
			}
		}
	}
}
scope:actor = {
	can_join_or_create_faction_against = {
		who = scope:secondary_actor
		faction = claimant_faction
		check_in_a_faction = no
	}
}
trigger_if = {
	limit = {
		exists = scope:recipient
	}
	scope:recipient = {
		NOT = {
			is_at_war_with = scope:actor
		}
		is_incapable = no
	}
}
scope:secondary_actor = {
	NOT = {
		has_strong_hook = scope:actor
	}
}
trigger_if = {
	limit = {
		scope:actor = {
			government_has_mechanic = administrative
		}
	}
	trigger_if = {
		limit = {
			scope:secondary_actor = {
				government_has_mechanic = administrative
			}
		}
		scope:secondary_actor = {
			is_independent_ruler = yes
		}
	}
}
trigger_if = {
	limit = {
		scope:landed_title.holder.culture ?= {
			has_cultural_parameter = physical_disfigurement_blocks_inheritance
		}
	}
	scope:recipient ?= {
		custom_description = {
			text = byzantine_claimant_is_disfigured
			object = scope:recipient
			valid_for_byz_succession_trigger = yes
		}
	}
}
trigger_if = {
	limit = {
		exists = scope:landed_title
		scope:actor.top_liege.primary_title.var:administrative_ui_special_title ?= scope:landed_title
	}
	scope:recipient = {
		tgp_is_in_ceremonial_house_trigger = yes
		trigger_if = {
			limit = {
				scope:landed_title = {
					holder.rite = {
						rite_has_doctrine = doctrine_gender_male_dominated
					}
					any_claimant = {
						is_male = yes
					}
				}
			}
			is_male = yes
		}
		trigger_else_if = {
			limit = {
				scope:landed_title = {
					holder.rite = {
						rite_has_doctrine = doctrine_gender_female_dominated
					}
					any_claimant = {
						is_female = yes
					}
				}
			}
			is_female = yes
		}
		trigger_else = {
			always = yes
		}
	}
}
trigger_if = {
	limit = {
		scope:recipient ?= {
			tgp_realm_has_ceremonial_liege_trigger = yes
		}
	}
	custom_tooltip = {
		text = cannot_create_claimant_faction_against_kampaku_tooltip
		scope:recipient ?= {
			tgp_is_ceremonial_regent_trigger = no
		}
	}
}
trigger_if = {
	limit = {
		exists = scope:recipient
		exists = scope:landed_title
		scope:recipient = {
			tgp_is_any_minister = yes
		}
	}
	scope:recipient = {
		custom_description = {
			text = target_is_a_minister_desc
			subject = this
			any_held_title = {
				tgp_is_minister_title = yes
				de_jure_liege ?= scope:landed_title
			}
		}
	}
}
NOT = {
	scope:recipient ?= {
		has_title = title:e_japan
	}
}

As written in game/common/character_interactions/00_vassal_interactions.txt.

on_send = scope:actor = {
	set_variable = {
		name = claiming_title
		value = scope:landed_title
	}
	if = {
		limit = {
			can_create_faction = {
				type = claimant_faction
				target = scope:secondary_actor
			}
		}
		create_faction = {
			type = claimant_faction
			target = scope:secondary_actor
		}
		joined_faction = {
			set_special_character = scope:recipient
			set_special_title = scope:landed_title
		}
		scope:recipient = {
			add_to_variable_list = {
				name = claimant_factions
				target = scope:actor.joined_faction
			}
		}
		if = {
			limit = {
				this != scope:recipient
			}
			save_scope_as = faction_invite_from
			joined_faction = {
				save_scope_as = faction
			}
			scope:secondary_actor = {
				save_scope_as = faction_target
			}
			scope:recipient = {
				trigger_event = faction_invitation.0001
			}
		}
	}
	remove_variable = claiming_title
}

As written in game/common/character_interactions/00_vassal_interactions.txt.