How do I address a quantity invoiced error? Check that your Total Amount (excl. GST) = Quantity Invoiced * Applied Contract Price Don’t use zeros in this field. For negative Total Amount (excl. GST) values, please ensure the quantities are also negative and proportional. Related articles How do I fix a net content error? How do I make sure my Unit of Measure (UOM) information is correctly entered? How do I ensure my GTIN information is entered correctly? How do I make sure my ordering part numbers are entered correctly? Are there instructions for submitting sales data reports?