The Unit price and Discount proposed in sales documents are by default the ones that are configured in the Sales prices and discounts tab of each product or service.
When a line in a sales document contains changes to the unit price, an icon ( ) is visible at the end of the line. For example, this can happen if a Discount group is applied or if manual changes to the Unit price or Discount are made.
This icon allows you to open a side panel that shows all the necessary information to determine the source of the price modification.
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