In Magento, by default, the sales order items for configurable products are showing the parent product SKU. How can we show the child product SKU for configurable products? I have tried changing the code in the function at vendor/magento/module-sales/Block/Adminhtml/Items/Column/DefaultColumn.php
public function getSku()
{
return $this->getItem()->getSku();
}to
public function getSku()
{
return $this->getItem()->getProduct()->getData('sku');
}But it still shows the parent SKU.
