If you are using the Inventory Management feature on Cloud, you will have the option to check in products that have been marked as “Stock Items” into your inventory locations. Checking in stock items will automatically update the stock levels of the stock items and help you in allocating stock items for projects.
If you want to start using the Inventory Management feature, check out the QuickStart and FAQ articles.
If you are looking to check in stock items into inventory locations, check out this article.