10000169 
Message
Enter number in "Bank Code" column
Diagnosis
In the Business Partner Master Data window, on the Payment Terms tab, you have chosen the Choose from List button to the right of the Bank Country field. In the Business Partner Bank Accounts - Setup window, you have entered information and chosen Update.
Procedure
In the Business Partner Bank Accounts - Setup window, in the Bank Code column, enter a bank code that you have defined in the 
Administration 
Setup Banking
Banks 
path, in the Banks - Setup window.