Customer purchase 20 SBC user license, in FA it shows 22/20 user used. once reach 22 user added, even after one user logout, another user can't login again.
when add new user to access SBC server, user login show error : " "initialize" Appliction operation failed: The current license is incalid or number of licenses reaches the upper limit.".
there are 2 type of license of SBC user, one is normal user, another one for Concurrent users. when user normal user, then it will limit quantity of add to APS server, for Concurrent users it will limit login APS server user quantity.
so then use 20 Concurrent users license, when another user logout, then new user can login the APS server.