V
Vico
Guest
And for the minister, it varies in the ordinary and extraordinary forms. For example, baptism. Catholic Encyclopedia:"The minister of this sacrament is the priest, to whom it belongs to baptize, by reason of his office. In case of necessity, however, not only a priest or deacon, but even a layman or woman, nay, even a pagan or heretic can baptize, provided he observes the form used by the Church, and intends to perform what the Church performs."Indeed there is as far as essentials.
What distinguishes a Sacrament from a pious practice is the fact that it was established by Christ with a specific form, matter, and minister.
Those essentials cannot differ, else it is either not a Sacrament or one of the theologies is in error. That is the problem.
In the West internal - the Roman legal mindset - and external - the responses to the Protestant Revolt - tightened the theology of the Sacraments.
First, they were for the first time enumerated since Protestants argued that only those clearly defined in the Scriptures were Sacraments and wound up with two or three sacraments, excluding specifically Matrimony.
Second, the essentials took some time to sort out since in some cases - Matrimony and Orders for two examples - it was not clear (since it had never been an issue) what the three essentials of each were.
Again, if the the minister of Matrimony is either the priest or the couple depending on the tradition and discipline, then Matrimony lacks a specific form, matter, and minister. That means it is a pious liturgical practice, not a Sacrament.
The terms “form”, “matter”, and “minister” are technical terms - certainly specific words and actions in various rites differ.
.
Fanning, W. (1907). Baptism. In The Catholic Encyclopedia. New York: Robert Appleton Company.
newadvent.org/cathen/02258b.htm
Also “it is certain, therefore, from the point of view of the Church that marriage as a sacrament is fulfilled only through the mutual consent of the contracting parties”
Lehmkuhl, A. (1910). Sacrament of Marriage. In The Catholic Encyclopedia. New York: Robert Appleton Company.
newadvent.org/cathen/09707a.htm
So we see the minimum requirement (the extraordinary form CIC and CCEO) to be both valid and licit, is the proper consent (with no invalidating impediments) of the couple in the presence of two witnesses.