In one aspect, there is provided a server for determining if an account in a transaction request is eligible for a promotion, the server operatively connected to a Payment Service Provider (PSP) device, and the server comprising at least one processor; and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, cause the server at least to receive, directly from the PSP device, a promotion Application Programming Interface (API) call comprising a transaction request corresponding to a user, the transaction request indicating an account information of an account, the promotion API call established through a connectivity between the PSP device and the server; and determine if the account indicated in the transaction request is one that is eligible for a promotion transaction in response to the receipt of the transaction request.