id (field)

A field that provides the unique identifier of a component ( concept, description or relationship) or reference set member .
Note:

The data type of the id for a component is SCTID and this identifier is used to refer to the component .
The data type of the id for a reference set member is UUID. This identifier is only used to support versioning of a rows ( member) in a Reference set it does not identify the Reference set itself (see refsetId) nor does it identify to a component refered to by the Reference set (see referencedComponentId ).