MDVA-33482 patch: tax miscalculation in credit memo

The MDVA-33482 patch solves the issue where tax is miscalculated in credit memos when there is no Adjustment Fee or Adjustment Refund applied.

This patch is available when the Quality Patches Tool (QPT) 1.0.15 is installed. Please note that the issue is scheduled to be fixed in Adobe Commerce version 2.4.3.

Affected products and versions

The patch is created for Adobe Commerce version: Adobe Commerce on cloud infrastructure 2.4.0

Compatible with Adobe Commerce versions: Adobe Commerce on cloud infrastructure and Adobe Commerce on-premises 2.3.5 - 2.4.2

Issue

Steps to reproduce:

1. Configure Taxes.
2. Create an order using two products in the backend using any online payment method (Example: PayPal Payment Pro). Make sure that taxes are applied to all the products.
3. Create two invoices for the order.
4. Create a credit memo against one of the invoices. Note that the solution is not applicable if you plan on applying an Adjustment Fee or Adjustment Refund.
5. Check the credit memo totals.

Expected results:

Only a partially-invoiced tax amount is in the credit memo, as expected.

Actual results:

The full tax amount is displayed in the credit memo.

Apply the patch

To apply individual patches, use the following links, depending on your Adobe Commerce product:

• Adobe Commerce or Magento Open Source on-premises: Software Update Guide > Apply Patches in our developer documentation.
• Adobe Commerce on cloud infrastructure: Upgrades and Patches > Apply Patches in our developer documentation.

Related reading

To learn more about Quality Patches Tool, refer to:

• Quality Patches Tool released: a new tool to self-serve quality patches in our support knowledge base.
• Check if patch is available for your Adobe Commerce issue using Quality Patches Tool in our support knowledge base.

For info about other patches available in QPT tool, refer to the Patches available in QPT tool section.