F5-ADD-BIG-User-1k LTM+APM License?

If you are using APM module for VPN function. You can add seperate user license (Add-on) to the device.

For example if your present license supports 5000 end user sessions, you can increase them to 6000 or 10000 with extra license.

You can verify apm sesison details before and after using below command.

tmsh show /sys license detail | grep apm_sessions