If you are creating a new product in your MyLogiwa account but you physically have inventory for that product, you can add the initial inventory quantity when you are creating the product.
To create a new product, go to 'Products' screen and click 'Create Product' button. To learn more about creating a product, you can read this article.
When you start product creation, you will see the 'Initial Quantity' field then type your quantity on-hand:
You can see your initial inventory level reflected in the ‘Inventory’ page:
Note, once you have saved the new product, you cannot edit the ‘Initial Quantity’ from the products page. If you would like to edit its inventory, you must go to the ‘Inventory’ page and edit the quantity from there. For more information on editing inventory, see our ‘Inventory’ manual.