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The Auto-Discount % and Auto-Discount columns are available if the Enable Automatic Discounts and Markups option is selected on the Administration > Settings > Sales form. Non-zero values in these columns indicate that one or more discounts are applied because their conditions are met in the document. If you changes change any line in the document, click the Auto button to recalculate the automatic discounts. For more information on discounts, refer to Overview of Trade Discounts.
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