The scope of this document includes: the semantic description of a product, including its properties where relevant and the semantic aspects to represent the product lifecycle; a common information model allowing for the implementation of data dictionary systems; metadata models and formats to be used in exchange and representation, allowing for the integration of dictionaries; rules on how to systematically use such metadata models when developing product group specific data models and dictionaries; technical and organizational interoperability. This document follows the approach of standard interoperability layers and proposes the following aspects in this regard.