Effective with the Constitution Act 1986, no British government can advise the sovereign on any matters pertaining to New Zealand, meaning that on all matters of the New Zealand state, the monarch is advised solely by New Zealand ministers of the Crown. As the monarch lives outside of New Zealand, one of the most important of these state duties carried out on the advice of the prime minister is the appointment of the governor-general, who represents the Queen and performs most of her domestic duties in her absence. All royal powers in New Zealand may be carried out by both the monarch and governor-general and, in New Zealand law, the offices of monarch and governor-general are fully interchangeable, mention of one always simultaneously including the other.