IT Shop limited requsestable items

Hello!
Tell me, is there a table in the IDM database that stores information about the number of users (Person) and how many times this or that AccProduct / Org is assigned to different users? My idea is that there is such and such an AccProduct or Org and if, for example, 100 users have it at the same time, then 101 will not be able to request it. Is it possible to somehow implement it, for example, through Account Policies? How is SoD?