Represents an instance in the product inventory of a ProductSpecification subscribed or not yet subscribed by a Customer to the CSP or by the CSP to a BusinessParnter, the place where the product is in use, as well as configuration characteristics, such as assigned telephone numbers and internet addresses. <br/><font color="#29313b">It may come from a CustomerProductOrderItem or a BusinessPartnerOrderItem. At one time, it might be contained in a unique ProductOfferingInstance.</font><br/>The Product ABE also tracks the links to services and/or resources through which the product is realized.<br/>The Product ABE also contains detailed concerning Network Products and Usage Volume Products as well as other examples of Products.<br/>