You can update product stock via a CSV file using Store Commander CSV import tool.
Your file will include:
- the product identifier, meaning the product name or its ID or its reference or even its EAN13/UPC code. The important thing is that the identifier chosen is unique on each product (no duplicate)
- the stock values
Depending on the identifier you'll chose, here we use the product name, below is the example of a CSV configuration in the CSV import window: