governor_contract_invalidated_message_effect

governor_contract_invalidated_message_effect = {
	task_contract_taker ?= {
		save_scope_as = task_contract_character
		send_interface_message = {
			type = event_generic_bad_with_text
			title = admin_contract_invalidated_title
			left_icon = scope:task_contract_character
			desc = admin_contract_invalidated_desc

			current_travel_plan ?= {
				if = {
					limit = { can_cancel = yes }
					cancel_travel_plan = yes
				}
			}
		}
	}
}

As written in game/common/scripted_effects/07_dlc_ep3_scripted_effects.txt.