The export module allows you to manage cost accounting by product or by document.
Cost accounting by products
Analytical codes are associated with products. They are defined in the product details:
Cost accounting by invoices
Analytical codes are associated with invoices. They are defined in the invoice creation window:
Change the cost accounting code of a particular line
You can at any time modify the analytical code a particular line by clicking the gear icon to the left of the line:
Note: in both cases, if no code is entered, the default code set in the preferences will apply.