In my custom module, I'm using StockRegistryInterface to set qty and save my product. But on Magento 2.3 I started facing the issue of having 0 salable qty right after saving the product.

Default stock 0

After digging a bit, I saw that StockRegistryInterface is deprecated and it was replaced with Multi Source Inventory. How should I save the qty of my product now?

Here is the piece of code where I do it with StockRegistryInterface:

        /* @var ProductInterface $product */
        $stockItem = $this->stock->getStockItemBySku($product->getSku());
        $this->stock->updateStockItemBySku($product->getSku(), $stockItem);

3 Answers 3


Here you go!

 * @var Magento\InventoryApi\Api\SourceItemsSaveInterface
protected $sourceItemsSave;

 * @var Magento\InventoryApi\Api\Data\SourceItemInterfaceFactory
protected $sourceItemFactory;

 * @param SourceItemsSaveInterface $sourceItemsSave
 * @param SourceItemInterfaceFactory $sourceItemFactory
public function __construct(
    Magento\InventoryApi\Api\SourceItemsSaveInterface $sourceItemsSave,
    Magento\InventoryApi\Api\Data\SourceItemInterfaceFactory $sourceItemFactory,
) {
    $this->sourceItemsSave = $sourceItemsSave;
    $this->sourceItemFactory = $sourceItemFactory;

 * @param $sku
 * @param $qty
 * @param $source
public function setQtyToProduct($sku, $qty, $source)
    $sourceItem = $this->sourceItemFactory->create();

  • It doesn't update the "Salable Qty", unfortunately
    – xpoback
    Commented Aug 25, 2022 at 13:14
  • It shouldn't update Saleable Qty, that logic is handled by Magento based on any items on orders.
    – Sondre
    Commented Dec 16, 2022 at 9:50

Use this page for the corresponding match for new Inventory API - https://github.com/magento-engcom/msi/wiki/Magento-MSI-APIs

  • 1
    Thanks a lot, I wish I had seen it before. I posted an answer showing how I did to save it in the default source.
    – Trimes
    Commented Apr 28, 2019 at 3:14

I found how to set qty to the product on the 'MSI way'.

PS: I'm using the default source.

The constructor:

private $sourceItemsSave;
private $sourceItemInterface;

public function __construct(
    SourceItemInterface $sourceItemInterface,
    SourceItemsSaveInterface $sourceItemsSave,
    $this->sourceItemsSave = $sourceItemsSave;
    $this->sourceItemInterface = $sourceItemInterface;

Saving the qty:

public function setQtyToProduct($product, $qty){

        /* @var ProductInterface $product */

  • 3
    no need to request object SourceItemInterface $sourceItemInterface into the constructor, as what you need is to create and initialize this object on the fly. Thus, what you need to request is Magento\InventoryApi\Api\Data\SourceItemInterfaceFactory and create the entity of SourceItemInterface with that factory when needed Commented Apr 29, 2019 at 20:22

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