1description: > 2 Implement to provide a unique identifier for an inventory item. 3properties: 4 - name: UniqueIdentifier 5 type: string 6 description: > 7 A free form, implementation defined string which uniquely and 8 permanently identifies a specific inventory item. This is 9 complementary to the item's serial number. This field should not be 10 used for programmatic interrogation of an object. 11