[Name] idlocation [Required] false [Attribute Constraints] Must not occur with 'id'. [Default Value] none [Valid Values] Any valid location expression [Description] Any location expression evaluating to a data model location in which a system-generated id can be stored. See below for details. [Type] 
Location expression
E v e n t T y p e . d a t a t y p e
V a l u e e x p r e s s i o n
U R I
v a l u e e x p r e s s i o n
x m l : I D
L o c a t i o n e x p r e s s i o n
D u r a t i o n . d a t a t y p e
L i s t o f l o c a t i o n e x p r e s s i o n s