Magento 2 contains Out of the Box Native feature of Credit memo generation from admin panel for an order after invoice generated.
What is a Credit Memo?
After a customer places and pays for an order for an online payment method and an invoice has been issued for the specific order, Merchant can create a credit memo to refund all or part of the amount paid for any returned or undelivered items.
The memo restores funds to the customer account or refunds to the customer bank account used for an order so that the customer can make future purchases. Continue reading “Get Credit memo details by creditmemo id Magento 2.”