Aftermarket sales and service of products is a key activity for many OEMs and for their network of distributors, dealers and retailers. Product service includes installation support, customer support, maintenance of products, spare parts, field service, repair center / depot support. Services generate considerable revenue over the lifecycle of a product, often exceeding those received from initial product sale. They are sold in a variety of ways like extended warranties, as part of guaranteed response service agreements and on an as needed, pay per call basis. While additional revenues are one of the primary interests in service, exceptional product service is also recognized as a major element of customer satisfaction and high customer retention rates. OEMs are also addressing the challenge of moving from a product centric organization to a solution focused organization, while still making service profitable and providing superior customer service. The service supply chain is very complex; so OEMs need to be able to manage the complexity through process automation and visibility. Visibility into the parts network helps ensure optimum inventory levels while avoiding penalties for not meeting the expected service levels for customers. OEMS also need to work effectively with their partners, as service delivery extends outside the boundaries of the OEM service organization.