When a CA smart card is created, the user is prompted to enter an optional zone description. The zone description can be up to twelve characters in length and cannot be changed.
When you enroll an entity (a TKE smart card, EP11 smart card, or a TKE workstation crypto adapter), the entity inherits the zone description from the CA smart card performing the enrollment. Similarly, when you backup a CA smart card, the zone description will be the same for both cards.