https://www.juniper.net/documentation/us/en/software/juniper-routing-director2.8.0/user-guide/topics/topic-map/view-add-delete-licenses.html
Manage Device Licenses | Juniper Routing Director 2.8.0 | Juniper Networks
Read these topics to learn how you (Super User or Network Admin) can add and delete device licenses.
manage device licenses2 8 0routing directorjunipernetworks