A collective term for attention to a transaction that normally takes place after the sale (and often after delivery) is accomplished. Typical after sale service functions include: installation, training, warranty-related repair and replacement part support. After-sale service is an extremely important consideration because of the normally greater distances between sellers and buyers in international trade. Some international contracts as distribution contracts include a clause of after-sales services and maintenance: The Distributor undertakes to carry out with its own staff and means, and assume the costs of, and adequate after-sales and maintenance service for all Products sold within the Territory. The Supplier shall provide the Distributor with the spare parts and other means required to service the warranty conditions of the Products. See also maintenance. Model of International Distribution Contract.