pam_valid_expand_ecclesiastical_title_target_trigger

pam_valid_expand_ecclesiastical_title_target_trigger = {
	$ARCHBISHOP$ = { save_temporary_scope_as = archbishop_temp }
	$TITLE$ = {
		tier = tier_duchy
		is_landless_type_title = no
		is_head_of_faith = no
		custom_tooltip = {
			text = pam_valid_expand_ecclesiastical_title_de_jure_county_faith_trigger
			OR = {
				holder.faith ?= $ARCHBISHOP$.faith
				any_de_jure_county = {
					count = all
					holder.faith ?= $ARCHBISHOP$.faith
				}
			}
		}
		trigger_if = {
			limit = {
				any_de_jure_county = {
					NOT = { exists = clerical_region_title }
				}
			}
			scope:archbishop_temp = {
				custom_tooltip = {
					text = pam_valid_expand_ecclesiastical_title_adjacent_to_clerical_region_trigger
					capital_province.county.clerical_region_title ?= {
						has_clerical_region = yes
						is_head_of_faith = no
						holder ?= scope:archbishop_temp
						is_adjacent_to_clerical_region = $TITLE$ # very unperformant
					}
				}
			}
		}
		trigger_else = {
			custom_tooltip = {
				text = pam_valid_expand_ecclesiastical_title_clerical_region_exists_trigger
				always = no
			}
		}
	}
}

As written in game/common/scripted_triggers/pam_scripted_triggers.txt.