To open an index type you can either use a lease or the list of index types.
If you open an index type via a lease you can only open the index type set for the lease. If you open an index type via the list of index types, you can open any index type.
For more information on how to:
open an index type via a lease, see the section "Open an index type via a lease"
open an index type via the list of index types, see the section "Open an index type via the list of index types".
