Multi-source inventory (MSI) Was Introduced from Magento 2.3 Version.
MSI contains multiple sources related to store location.
Magento 2 Create custom event and observer using events.xml programmatically.
Magento 2 Supports Create Custom Event Observer with your event name.
Under your module with the event defines using dispatch() method and events.xml file. You can Handle the Events data using Observer Class.
How to remove refunds link from the Order page Magento 2?
Customers can track the status of their orders refunds from the dashboard of their accounts, My orders tab.
Refunds are the translated string label for Creditmemo functionality.