Add "Spoilage Credit" feature to Invoicing which examines any negative values entered into the "Sales Tax %" field of Customer File Maintenance, which create negative tax amounts on that customer's invoices, and assigns one of two vales below.

 

•When the Sales Tax is a negative number, the associated value will be listed as "Spoilage Credit".

•If the Sales Tax is a positive number then the amount will be listed as "Sales Tax".