MDVA-35984: Wrong product Qty in concurrent shipments for same product

The MDVA-35984 patch fixes the issue when creating multiple concurrent shipments for the same product gives an incorrect product quantity (Qty). This patch is available when the Quality Patches Tool (QPT) 1.0.21 is installed. The patch ID is MDVA-35984. Please note that the issue was fixed in Adobe Commerce 2.4.3.

Affected products and versions

The patch is created for Adobe Commerce version:

Adobe Commerce on cloud infrastructure 2.4.2

Compatible with Adobe Commerce versions:

Adobe Commerce (all deployment methods) 2.4.0-2.4.2

NOTE
The patch might become applicable to other versions with new Quality Patches Tool releases. To check if the patch is compatible with your Adobe Commerce version, update the magento/quality-patches package to the latest version and check the compatibility on the Quality Patches Tool: Search for patches page. Use the patch ID as a search keyword to locate the patch.

Issue

Steps to reproduce:

  1. Create a simple product with Qty = 100.

  2. Create two orders with this product.

  3. Make concurrent API calls to create shipments for both orders, like this Example:

    code language-php
    POST <host>/rest/<store_code>/V1/order/3/ship    ```    where **order id** = *3* , with a payload like:    ```php    {        "items": [            {                "order_item_id": <order_item_id>,                "qty": 1            }        ],        "tracks": [            {                "track_number": "1Y-9876543210",                "title": "United Parcel Service",                "carrier_code": "ups"            }        ]    }
    
  4. Check the product Qty in the Admin grid.

Expected results:

The result is product Qty = 98 after both shipments.

Actual results:

The result is product Qty = 99 after both shipments.

Apply the patch

To apply individual patches, use the following links depending on your deployment method:

To learn more about Quality Patches Tool, refer to:

For info about other patches available in QPT, refer to Patches available in QPT in our developer documentation.

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