Select the Import stock tab
Select Field 1, 2, 3 (recommended is Sku, Stock Qty, Stock Status), Stock Delimiter (recommended is ,) and Stock Enclosure (recommended is “).
State your quantities as per format below in the blank section.
The example below could be copied / pasted in the blank section (make sure to change values!):
21-111,520,Out of stock
21-49,365,Out of stock
In case you have > 100 entries, you can use this CSV template file and update using Import Stock File button.