Set the defaults for your suppliers to match your business operations.
The form to check and edit supplier preferences is accessed by clicking on the Set supplier preferences title -(hyperlink).
Carefully consider each option and select the alternative non-default if you wish to change a preference. You can add a new nominal code if required. Please ensure you are happy with your choices before you click on Submit to save, as once you start entering transactions it may not be practical to change.
Note that if you wish to use suppliers invoice number you can enter these as a reference and still have a sequential numbering for filing.