opération commerciale Any event, condition, action or commitment, the result of which is the acquisition, disposition or use of assets or resources; the increase or reduction in a liability; the receipt or payment of funds; or the provision of services of which a client is charged. Business transactions occur commonly in, but are not limited to, such diverse areas as finance, administration, personnel, contracts, and program management. Business transactions may also include formal approvals or authorizations such as correspondence. Source: Policy on Electronic Authorization and Authentication