To check all payments made to a specific VA number, you can hit the "Get List of Transaction VA" API endpoint. In the "data" parameter, you can find detailed information for each payment, including the payment identifier (id), transaction amount (amount), and settlement status (settlement_status).You can also differentiate each payment for the same VA number through callbacks. Each payment will have a unique identifier, which can be found in the `trx_id` parameter of the callback. You can refer to the following link for a more detailed explanation.