You can store Branch Details of Banks which are used in your Administration System to ensure consistency and accuracy when new records are created.

From the Renewals Page of the Membership Record:

When you select on the Sort Code Field, press F1 - Help.  The following screen will then be displayed.

Enter the Sort Code of the bank into the filter box at the top of the screen and select F3 - Accept.  The following screen will be displayed for you to enter the Bank Details.

Once the Bank Details have been entered, you can select F3 - Accept to add the details to the current membership record.

After the file has been set-up, if the same sort code is then used against another membership record, the bank name will automatically be populated.