Query Related to License

Go through below answer.

What is "Licensed on" & "Service Check Date" are ? (in CLI output): Reference

License check date - is a static date corresponding to the software version.

Service check date - is updated each time when you re-activate the license based on your active support contract.

which are all Modules (for which License is purchased) are in Actively used

==> Go to System >> Resource Provisioning see which are the module has activated and used.

* There from some Optional Modules as well: Contains, ASM, AFM, PSM, Link Controller, WAN, WOM, MSM, Routing Bundle and many more.

==> Go through System >> Resource Provisioning see which are the module has activated and used.

Hope it will solve your query