Super novice question. Some IDs are in a form of aaa_nnnnn_annnnn_nnn and appears to be system generated. What is the breakdown of the ID? e.g.

that looks like an id for a value such as a specific list value? basically, places where NS allows us to type in an id then we control it, otherwise NS assigns it.

Agreed, but I feel like there is some kind of logic to the way the system does it. i just haven't figured out the pattern (yet). Wondering if the pattern has some utility to it that would inform the way I assign ID values.

I always try to assign id values so they are meaningful text. Even if there were a pattern to how NS assigns "random" ids I'm not sure I'd want to adopt it, unless I were building a product that needed to know that for some reason?