vassal_grant_de_jure_shift_trigger

vassal_grant_de_jure_shift_trigger = {
	tier >= tier_duchy
	tier = scope:secondary_actor.highest_held_title_tier
	NOR = {
		target_is_de_jure_liege_or_above = scope:recipient.primary_title
		any_de_jure_county = {
			any_county_situation = {
				any_participant_group = {
					participant_group_type = nomad_rulers_capital
				}
			}
		}
		any_de_jure_county_holder = {
			NOR = {
				any_liege_or_above = {
					this = scope:recipient
				}
				is_tributary_of_suzerain_or_above = scope:recipient
				top_liege = {
					is_tributary_of_suzerain_or_above = scope:recipient
				}
			}
		}
	}
	switch = {
		trigger = scope:secondary_actor.highest_held_title_tier
		tier_kingdom = {
			any_title_to_title_neighboring_kingdom = {
				this = scope:recipient.primary_title
			}
		}
		tier_duchy = {
			any_title_to_title_neighboring_kingdom = {
				this = scope:recipient.primary_title
			}
		}
	}
}

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