Update (May 31st, 2016): For a more detailed post on this topic, click here.
One of the most consistent things across ERP systems is the General Ledger Account Structure where the GL Accounts are given a certain structure according to your business needs. While this isn’t complicated, sometimes it’s nice to see how the screens look so you get a feel for the product. It’s kind of like a first date with your ERP system. So, with that in mind, here is a 4 minute video showing the relevant screens in Acumatica related to the General Ledger Account Structure setup.
I’m not positive what the length limits are, but, as far as I can tell from looking at the database structure, the maximum length of an ACCOUNT segment is 10 and the maximum length of a SUBACCOUNT segment is 30. As far as a limit on the number of segments within ACCOUNT or SUBACCOUNT, I’m not sure that there is one, theoretically. After recording the video I went back in and added a bunch more segments, all of length 30, to the SUBACCOUNT segment and didn’t get any errors (see screenshot below). I then defined some valid values for a few of the segments using the Segment Values (CS203000) screen and I still didn’t get any errors. I’m not sure why you would need so many segments, but it’s always nice that you could make things incredibly complicated if you wanted to.