PHP 7.3 reaches end of support in December 2021 and Adobe Commerce 2.3.x reaches end of support in April 2022. You may want to consider planning your upgrade now to Adobe Commerce 2.4.x and PHP 7.4.x to help maintain PCI compliance.
SalesInventory
Magento_SalesInventory module allows retrieve and update stock attributes related to Magento_Sales, such as status and quantity.