A request for standing offer (abbreviated as RSO) is a form of solicitation used to request that suppliers make available their goods and/or services for delivery on an “as-needed” basis. A standing offer is not considered to be an active contract until such time as the buyer orders from a supplier’s standing offer for the first time. On Tradogram, flexible request forms can be used to negotiate contract terms. The stored contract arrangement can then have orders placed from it under the supplier’s agreed terms.