The scope of this Recommendation | International Standard is: – an enterprise specification for the trading function; – an information specification for the trading function; – a computational specification for traders (i.e. objects providing the trading function); – conformance requirements in terms of conformance points. It is not a goal of this Recommendation | International Standard to state how the trading function should be realized. Therefore this Recommendation | International Standard does not include an engineering specification. The field of application for this Recommendation | Intenational Standard is any ODP system in which it is required to introduce and discover services incrementally, dynamically and openly.