I don't understand your meaning,but i guess you have some confuse about wlc license,wlc3504 can with license as below:
Right-to-use (with End User License Agreement [EULA] acceptance) license enablement for faster time to deployment
Flexibility to add additional access points (up to 150 access points) as business needs grow
Cisco Smart Software Licensing
License Portability from WLC5520 and WLC8540
maybe,you can get help from license team of Cisco.
Rps-Cheers | If it solves your problem, please mark as answer. Thanks !