MDVA-40896: ‘Error: TypeError: Argument 3’ error in async product

The MDVA-40896 patch fixes the issue where the Error: TypeError: Argument 3 passed to Magento\Framework\Webapi\ServiceInputProcessor::process() must be of the type array, string given error is shown in async product bulk API. This patch is available when the Quality Patches Tool (QPT) 1.1.15 is installed. The patch ID is MDVA-40896. Please note that the issue is fixed in Adobe Commerce 2.4.4.

Affected products and versions

The patch is created for Adobe Commerce version:

  • Adobe Commerce (all deployment methods) 2.4.3

Compatible with Adobe Commerce versions:

  • Adobe Commerce (all deployment methods) 2.4.3 - 2.4.3-p2
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

Error: TypeError: Argument 3 passed to Magento\Framework\Webapi\ServiceInputProcessor::process() must be of the type array, string given error is shown in async product bulk API.

Steps to reproduce:

  1. Send a request to rest/all/async/bulk/V1/products/bySKU endpoint using the following payload:
[
  {
    "product": {
      "sku": "24-MB01",
      "price": 36,
      "extension_attributes": {
        "stock_item": {
          "qty": 100,
          "is_in_stock": true
        }
      },
      "custom_attributes": [
        {
          "attribute_code": "new",
          "value": "1"
        }
      ]
    }
  },
  {
    "product": {
      "sku": "24-MB04",
      "price": 28,
      "extension_attributes": {
        "stock_item": {
          "qty": 50,
          "is_in_stock": true
        }
      },
      "custom_attributes": [
        {
          "attribute_code": "new",
          "value": "0"
        }
      ]
    }
  }
]

Expected results:

Product details are returned.

Actual results:

The error Error: TypeError: Argument 3 passed to Magento\Framework\Webapi\ServiceInputProcessor::process() must be of the type array, string given occurs.

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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