Abstract: A supply chain data management system comprises a first trading entity (112) and at least one second trading entity (110) coupled to be in communication with a server (102) via a communications network, the first trading entity registered with the server as a participant of the system and the at least one second trading entity registered by the first trading entity as a trading partner of the first trading entity. A profile is associated with each said trading entity, which specifies supply chain data to be communicated to and/or from the trading entity. Each profile is accessible by the server, which automatically requests supply chain data from at least one of the trading entitles and in response to receiving the requested supply chain data, the server communicates data related to the supply chain data to one or more other of the trading entitles in accordance with their profile.