A method performed by a global transaction validation system includes receiving a transaction request from an originator, processing the transaction request by generating a data message containing the transaction data and by generating a notification message including at least part of the transaction data, transmitting the data message to the recipient financial institution, transmitting the notification message to a recipient device associated with the transaction recipient, receiving a return notification from the recipient device, and validating the transaction request based on the return notification indicating that the transaction is valid.