Recently I have observed that we have some errors in certain Purepath collections. The diagnostic code sent by the question is also a bit different. Through inquiry, we learned that some Purepath had subpath flaws (Code: S6), and some had Node flaws (Code：N2, N4).
I want to try to understand what is a subpath flaw and what is a Node flaw in Pathpath, but I really don't have any clue. Could someone please explain the difference between Subpath and Node for me?