Canon 784

In the particular law of each Church sui iuris, after consultation with the eparchial bishops of other Churches sui iuris

exercising power in the same territory, norms are to be issued

concerning the examination of the parties and other means for

inquiries which are to be carried out before the marriage, especially those which concern baptism and the freedom to marry,

which are to be diligently observed so that the celebration of

the marriage can proceed.