If the item is overdue, the expected interest is calculated and compared to the actual paid interest. If the difference exceeds a customer-dependent, customizable threshold, a warning is displayed. Discount and interest never coincide and therefore, this difference threshold is customized via the same field as it is used for discount differences, such as the field Cash discount adj . in the following Customizing activity:

Financial accounting ® Accounts Receivable and Accounts Payable ® Business transactions ® Manual payment receipt ® Define tolerances (customers)