Question about custom target systems and account tables

Hi everyone,

I'm working on a custom target system, and I noticed there's a table called UNSAccountB, but it doesn't follow the structure I need for my use case.

Is it considered a good practice to extend the UNSAccountB table to meet custom requirements, or is it better to create a dedicated table for each custom target system I build?

Also, is there any official documentation or guideline on how to properly create an account table for a custom target system?

Thanks in advance for any help!