MDVA-31640 Magento patch: unable to create consecutive scheduled update via REST API

The MDVA-31640 Magento patch fixes the issue where a new scheduled update for the special price cannot be created for multiple stores using REST API, if the start date of the update coincides with the end date of the previously existing update. This patch is available when the Magento Quality Patch (MQP) tool 1.0.9 is installed. Please note that the issue is scheduled to be fixed in Magento 2.4.2.

Affected products and versions

The patch is created for Magento version:
Magento Commerce Cloud 2.3.5-p1.

Compatible with Magento versions:
Magento Commerce Cloud and Magento Commerce 2.3.1 - 2.3.5-p2, 2.4.0, 2.4.0-p1.

Note: the patch can be applicable to other versions. To check if the patch is compatible with your Magento version, run ./vendor/bin/magento-patches status.

Issue 

Fixes the issue where a new scheduled update for the special price cannot be created for multiple stores using REST API, if the start date of the update coincides with the end date of the previously existing update.

Steps to reproduce:

1. Set up an additional website, store and store view.
2. Create two simple products: "product1" and "product2".
3. Assign product1 to one website and product2 to both websites. 
4. Create a scheduled update for the special price for the product1 on the store view for the store with ID 1. Use REST API POST request to rest/V1/products/special-price with the following payload:

        {
       "prices": [
           {
               "price": 15,
               "store_id": 1,
               "sku": "product1",
               "price_from": "2021-11-15 04:00:00",
               "price_to": "2021-11-15 04:10:00"
           }
       ]
   }

5. Create a scheduled update for the special price for the product2 on both store views for stores with ID 1 and 2 using REST API POST request to rest/V1/products/special-price with the following payload (the price_from date is the same as price_to date in the previous request):

    {
       "prices": [
           {
               "price": 14,
               "store_id": 1,
               "sku": "product2",
               "price_from": "2021-11-15 04:10:00",
               "price_to": "2021-11-15 04:15:00"
           },
           {
               "price": 13,
               "store_id": 2,
               "sku": "product2",
               "price_from": "2021-11-15 04:10:00",
               "price_to": "2021-11-15 04:15:00"
           }
       ]
   }
   

Actual result:
Magento throws an error. Scheduled update is not created.

Expected result:
Scheduled update with the special price change is created on both store views.

Apply the patch

For instructions on how to apply an MQP patch, use the following links depending on your Magento product:

• Magento Commerce: DevDocs Apply patches using Magento Quality Patches Tool.
• Magento Commerce Cloud: DevDocs Upgrades and Patches > Apply patches.

Related reading

To learn more about Magento Quality Patches, refer to:

•  Magento Quality Patches released: a new tool to self-serve quality patches.
•  Check if patch is available for your Magento issue using Magento Quality Patches.

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