A detailed description of a tangible or intangible object made available externally in the form of a ProductOffering to Customers or other Parties playing a PartyRole. <br/><br/>The ProductSpecification represents a product specification as perceived by the business user and specifies what the marketing operator wants to sell at a functional level (i.e. what are the capacities, which usages are available…).<br/><br/>It can represent:<br/><br/> • material goods (Terminal, phone, mobile, fax, modem)<br/><br/> • or intangible goods (like an Anti-Spam service for email).<br/><br/>When the ProductSpecification represents a tangible goods, it is realized as ResourceSpecification. Corresponding Resources are stored in warehouses or bought to a supplier on demand.<br/><br/>When the ProductSpecification is an intangible good, it is either realized as a CustomerFacingService (when the Service Provider is able to realize it) or bought as a ProductSpecification proposed by a Supplier (when the Service Provider is not able to realize it). For example, a Broadband know-how might be built or bought depending on the location of it.<br/><br/>The ProductSpecification corresponds to a sub-set of the Service Provider’s know-how according to what marketing people want to sell. Therefore, a ProductSpecification is a restriction of CustomerFacingServiceSpecs.<br/><br/><br/><br/>A ProductSpecification may consist of other ProductSpecifications supplied together as a collection. Members of the collection may be offered in their own right. ProductSpecifications may also exist within groupings, such as ProductCategories, ProductLines, and ProductTypes.<br/><br/><br/><br/>Note: Since SID 16.0, ProductSpecification is a sub-class of EntitySpecification. Therefore it inherits from RootEntity's attributes (ID, name, description).<br/><br/>That's why the previous attributes name, description and productNumber (corresponds to ID) have been removed from ProductSpecification.<br/><br/>While the “description” attribute inherited from RootEntity is optional (not required in a SID implementation), in the case of ProductSpecification it is required.<br/>