торговый партнёр(An external or internal organization with which your oganization exchanges electronic data. For example, a trading partner could be a supplier, a customer, or an internal department)
соглашение между торговыми партнёрами(A definitive and binding agreement between two trading partners for transacting messages over a specific business-to-business protocol. A trading partner agreement brings together common bi-directional message processing properties from specific business profiles of both partners. It is a comprehensive collection of all aspects governing the business transaction between the two trading partners. The trading partner agreement is typically derived from the profiles of each partner, with the ability to customize and override the required settings)