A customer can register a unique replacement Number for all their IBAN accounts and use that mobile number and email address to receive and send interbank transactions. This way, when you enter your IBAN number when making interbank transactions or enter the Relacement Number with your mobile number and email address registered on another bank account, the bank and customer's name will appear and you can make transactions more easily. Please note that only one Replacement  Number can be registered for an account with one IBAN number.