data format in component with tracability

[Bebert]

Hi,
I would like to modelize a functional view of the SI with the data expected or provided in each component.
 The aim is to follow the data life cycle and provide an accurate word documentation.
My topic is how to describe the data and to link with the component.
If I use an exposed interface, I can’t set some attributes
If I use an exposed interface with a Element « interface » (with my attributes including), I have no traceability between  my exposed interface and my element.
I could use an exposed interface and use a realize relationships with an artefact but I think it could be improved.
Do you have a better way?
Thanks

[Guillaume]

Interfaces don't support attributes/data - they are intended to define the "contract" i.e. services to be provided or used by each component hence you should only define operations.
You can try using information flows between Components ; this feature lets you select one or several UML classs from a "data model" that goes from a component to another.