Disclosed are techniques for the creation, communication, negotiation, and storage of promotion events between trading partners. A promotion event is managed between a retailer and a vendor each having an associated computer in communication with a data network. The promotion event is defined to include terms, including an event description and a designated items description. The terms are situated in fields of a promotion event record. The designated items description is matched to a list of items stored in an item table. This list of items is authorized for sale by the retailer. A validation operation includes determining whether the fields in the promotion event record conform to requirements of a deal sheet associated with the retailer. The promotion event record is stored as a deal in a deal transaction storage medium. The retailer computer is provided with read access to the stored deal. The retailer can then negotiate the stored deal with the vendor. The vendor can revise the terms of the stored deal as desired. Further negotiation can occur until the deal is accepted.