You can do this by using custom product attributes inside your products in the back office of your Magento store.
It may seem complicated, but truth to be told, it is an easy and straightforward procedure.
How to add a product description?
If you do not want to insert that description for each of your international orders manually, you should create a custom product attribute called "description", and later on, fill in the field with the preferred description. After that, you can be sure that Outvio will fill in the content field of the shipment with the description of the products contained therein.
How to add the HS code to the product?
When it comes to shipping outside of Europe, it is compulsory to add the HS code to the products. You can add the HS code manually in Outvio (if you have a few international shipments), but it would be much more convenient if you add that information to your product description in Magento (there is a separate field for the HS code). Keep in mind that, Outvio only considers the first 6 digits of the HS code.
How to tag products as non-returnable?
In case you have no wish to make all of your products automatically returnable through your returns portal, you can select the ones that are not returnable and tag all these products with a custom product attribute called "no_return". This way, when your customers access your returns portal, they will not be able to return those products.
As you can see, it is quite effortless to use custom product attributes in your Magento store. We strongly recommend you to take advantage of that function, since, after all, it will save you a lot of time when you manage your shipments in Outvio.