Cannot update Stock Item Quantity for a Product in Magento 1.6.2

Question

I am trying to update the stock quantities of products in Magento from within a script.

I load the product, set the stock quantity, and save - but the quantity remai

Answer 1

In my case I got the same problem with products that I've imported programmatically. I just realized that I forgot to add stock_data in the array...

'name' => $productName,
'stock_data' => array(
                        'use_config_manage_stock' => 0,
                        'manage_stock' => 0,
                        'qty' => 0,
                        'stock_id' => 1,
                        'min_qty' => 0,
                    )

Without stock data information, Magento generates an exception(at \Mage_CatalogInventory_Model_Stock_Item) when adding product to cart.

With this node, it works. =)