Two years after the Synod of the HKBP implemented its 1968 Order of Discipline, the GKPI initiated its own Order of Discipline called the Hukum Siasat Gereja (in Indonesian) or Ruhut Paminsangon Dalan Manogunogu (in Toba Batak).
Members of the GKPI who wished to perform adat feasts to the accompaniment of the gondang and tortor were instructed to seek permission from the Church.
I, who have signed below, that is, the principal of this feast of the gondang make everything in this endeavor subject to the rules of the Protestant Church of Indonesia (GKPI).
The present Order of Discipline of the HKBP was written in 1982 and that of the GKPI in 1987; each maintains the previous rules but makes some additional points.
(95) The GKPI similarly requires that those who intend to perform adat feasts associated with traditional practices must request the Church's approval; every adat feast must begin and end with Christian practices.
(96) The HKBP and the GKPI insist that those who disregard the regulations may be penalised, by the suspension of their Church membership, for example.