A user of a computer is able to define and manage partner-product ranges in which each partner-product range is associated with products, business partners and a priority indicator. When a particular business partner or a particular partner-product combination is associated with multiple partner-product ranges, the priority indicator of each of the multiple partner-product ranges is used to determine which of the multiple partner-product ranges is to be applied to the business partner or the particular partner-product combination, respectively. In this way, a user may define a partner-product range that applies to one or more partner-product combinations or one or more business partners that otherwise would be covered by another partner-product range.