Warning for duplicate supplier invoices

In MYOB AccountRight there is the preference setting where you can ask MYOB to warn you for duplicate supplier invoice / purchase numbers on recorded systems, which is a great feature.  This feature is not available in MYOB Business, which a lot more clients are using.  This results in the doubling up of bills being created for one supplier invoice, which throws out the dashboard summary for their income, expenses and overall financial position plus makes a lot more work for the person who is doing the reconciliations.  I would like to see this option made available in MYOB Business :)