Abstract: A server system of an embodiment for transaction processing includes a virtual point-of-sale server to register data of a customer transaction based on data received from a first terminal operated by the customer in a selling area and a management server. The management server generates a machine-readable code including information for acquiring the transaction data and an electronic settlement method. The management server transmits the machine-readable code to the first terminal upon receiving a checkout instruction. Upon receiving information for acquiring the transaction data from a second terminal, the management server acquires the transaction data from the virtual point-of-sale server, and processes an electronic payment if the information regarding the electronic settlement method is received from the second terminal.

Abstract: An electronic receipt management server includes an electronic receipt management unit for managing a code of each consumer and electronic receipt information in correlation with each other, a first receiving unit for receiving from an information processing device of a consumer a selection of electronic receipt information that is an object of grouping, among the electronic receipt information correlated with the code, and a first grouping unit for grouping the selected electronic receipt information into a group to be managed by the electronic receipt management unit.