Patent ID: 8069140

Claim:
A system comprising: a computer for generating an identifier request and transmitting the identifier request to a first Web service stored on a first server; a first server for: storing the first Web service, receiving the identifier request and processing the identifier request using the first Web service, sending an identifier to the computer and a copy of the identifier to a second server, storing a copy of the identifier sent to the first computer and the second server, and an indication that the identifier has been used, receiving a signal from the computer acknowledging receipt of the identifier, and when the signal from the computer acknowledging receipt of the identifier is not received by the first server before a timeout condition is met: removing the indication that the copy of the identifier has been used; and resending the copy of the identifier to the second server; and a second server for: storing a second Web service, storing, by the second Web service, in a storage area of the second server, the copy of the identifier and an indication that the copy of the identifier has been used, and removing the indication that the copy of the identifier has been used upon receipt of a duplicate copy of the identifier from the first server.