MAGETWO-64120: Error processing your request when placing reorder for simple product of configurable if attribute is changed

Author: olysenko

app/code/Magento/Sales/Model/Order/Reorder/OrderedProductAvailabilityChecker.php

@@ -11,6 +11,10 @@
 /**
  * @api
  *
+ * Class marked as an API because it can be used as extensibility point to check availability of
+ * different product types(in order management). Can be configured through di by adding a check as a new element
+ * of the array $productAvailabilityChecks(constructor argument). A product type should be a key for the new element.
+ *
  * Class OrderedProductAvailabilityChecker
  */
 class OrderedProductAvailabilityChecker implements OrderedProductAvailabilityCheckerInterface

app/code/Magento/Sales/Model/Order/Reorder/OrderedProductAvailabilityCheckerInterface.php

@@ -8,6 +8,8 @@
 use Magento\Sales\Model\Order\Item;
 
 /**
+ * @api
+ *
  * Interface OrderedProductAvailabilityCheckerInterface
  */
 interface OrderedProductAvailabilityCheckerInterface