Defining the Banks of Your Customers and Vendors 

You specify the banks of your customers and vendors in the customer and vendor master records. To do this, enter the bank country, the bank number and the bank account number for each customer or vendor bank account. These specifications are used, for example, for automatic payment transactions. The payment program uses these specifications to determine the bank address and bank account number for money transfer forms.

For additional information on using the IBAN, see International Bank Account Number (IBAN)

You can make as many bank details entries as you wish. The link to the bank master data is established by the bank country and the bank key (the country-specific bank ID).