| 摘要 |
The present invention provides processing system that comprises an issuer function and a merchant function as part of a card processor. The issuer function is arranged to receive a first authorisation request from a first card scheme administrator associated with a first transaction card, the first authorisation request relating to a card transaction made by a cardholder using the first transaction card at a card acceptor and including a number of data elements. A mapping function is provided in the card processor that is arranged to convert the first authorisation request into a second authorisation request, the second authorisation request relating to a transaction associated with an account held with an institution, wherein the mapping function is arranged to use contents of at least some of the data elements of the first authorisation request to form the second authorisation request. The merchant function is arranged to send the second authorisation request to the issuer of the institution of the account, and to receive a first authorisation response from the institution, the first authorisation response including a number of data elements. The mapping function is then arranged to convert the first authorisation response into a second authorisation response, the second authorisation response relating to the card transaction made by a cardholder, wherein the mapping function is arranged to use contents of at least some of the data elements of the first authorisation response to form the second authorisation response. The issuer function is arranged to send second authorisation response to the card acceptor via the first card scheme administrator. |
