People rarely agree. Getting people to agree on one point is difficult enough; getting people to agree on 20, 30, and 50 points in nearly impossible. In matters of religion, I think it is impossible! Given the rarity of agreement, one would think that Christian denominations would limit their statements of faith to include only the most salient doctrines of Christianity, as well as a few denominational distinctives thrown in for good measure! And yet, it is common for denominational statements of faith to include many articles on secondary, tertiary, and quaternary doctrines, as well as non-biblical issues. This seems to me to be a recipe for disaster.
If an organization has, say, 30 articles in their articles of faith that one must assent to in order to belong to the group, one of at least four things will happen: