Please cancel the relevant invoices unless there are referenced credit notes against the invoices, because you will have to cancel the credit notes before you can cancel the invoices.
Error - 'This delivery note cannot be cancelled as it is referenced on invoice number...'
Full error message when trying to cancel a delivery note: This delivery note cannot be cancelled as it is referenced on invoice number 123456.You will need to cancel any referenced invoices before proceeding.
Written by Arthur Ashdown