In certain European countries, it's a legal requirement to display the sales tax code for each sales order line and the free text invoice line on the sales invoice. This ensures transparency regarding sales tax percentages and fiscal policies applied to each line.

Introducing an option to include the sales tax code for each line of the sales invoice layout would greatly benefit users. It would allow for clear visibility of the sales tax code alongside line descriptions, quantities, and line amounts, enhancing overall clarity and compliance.