Product type
Products can be either services or goods. Depending on that, different tax codes would apply.
In the preferences page of your Quaderno account, you can select your default product type based on the products you sell most.
This might be important when you are selling both product types, in case that your active integrations do not send the product type to Quaderno. The default product type will be used when we do not receive that information on a transaction basis.