(1) A transfer of funds (credit or debit) between banks.
(2) In WebSphere Commerce Payments, a merchant's request of a financial institution to approve all or part of an order. In many cases, all the money authorised for collection by an order will be collected in a single payment. Some payment systems allow the money authorised in one order (that is, one set of payment instructions) to be collected in multiple payments, depending on the business model.