Solid Edge Embedded Client ST6 supports Teamcenter’s use of multifield keys to define what makes an Item business object unique in Teamcenter.
Teamcenter defines Item business object uniqueness using a single property, Item ID. Beginning with Teamcenter 10, Item business object uniqueness is extended to include additional properties (such as Item ID and Type). When the Teamcenter functionality is deployed, Solid Edge ST6 is able to reuse the Item ID for instances of different Item business objects (such as Item, Design, Drawing, and Document).
For more information, see Using multifield keys in a Teamcenter managed environment.