The tax codes (VAT, additional tax and/or special tax, provincial tax) can be modified at the return line if the transaction allows this.
You can only enter tax codes which are consistent with the legislation and with the company group of the site.The general principles linked to the multi-legislation setup are detailed here.
They are normally initialized according to the tax determination rules that most often stem from crossing the supplier tax rule with the tax levels of the entered product. If the return line has a receipt line as its origin, the tax codes will then be inherited from the receipt line.
Upon transforming a return line into a credit memo line, the tax codes entered on the return line are transferred to this document.
Click the Actions icon to select a tax code for each tax level.