Yeah, I always wondered how one of the wealthiest companies on earth could be so poor in linking to their own documentation.

Then I realized that they have a galaxy of consultants and experts that effectively make a living by keeping on top of all issues and fixing them for a fee. So there is little incentive for them to actually be user-friendly: as long as they are "partner friendly" with timely material, that's good enough.

They are not alone in this, btw - pretty much all major platform providers do this, one way or the other.