In 1291 Grand approved himself as a jurist and decreed the new "Constitutio cum Ecclesia Daciana", asserting canon law in Denmark at the expense of royal privileges. This affront escalated in a dispute between Eric "Menved" and Grand on the investiture of Lund's dean, Thorkil, and its provost, Jakob Lange, with additional prebends. In the following year Grand initiated to set up a necrologium of the Archdiocese, an inventory recording all the dead to be clerically commemorated by Offices of the Dead and the pertaining prebends and foundations donated to account for these ceremonies. In the course of the dispute - ostensibly on the prebends Grand invested disregarding the royal say in investiture - Grand excommunicated Eric "Menved".