Any option available to know how many users the user role is assigned to?

Content

We would like to know if there is an option or web service when we are assigning the role to a user, is it possible to know how many users in fusion does the user role is assigned to? This is knowing well from a solution point of view that when we are assigning the role to a user, we would like to prevent exceeding the license quota we have for a particular user role i.e. for instance, we cannot exceed the role being assigned to this many users. 

 

Version

21B (11.13.21.04.0)