diff --git a/app/code/Magento/ConfigurableProduct/Model/LinkManagement.php b/app/code/Magento/ConfigurableProduct/Model/LinkManagement.php
index 79c2dd812acf1..2f07f8b90ce7e 100644
--- a/app/code/Magento/ConfigurableProduct/Model/LinkManagement.php
+++ b/app/code/Magento/ConfigurableProduct/Model/LinkManagement.php
@@ -1,6 +1,5 @@
 <?php
 /**
- *
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
@@ -11,6 +10,11 @@
 use Magento\Framework\Exception\NoSuchEntityException;
 use Magento\Framework\Exception\StateException;
 
+/**
+ * Configurable product link management.
+ *
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
+ */
 class LinkManagement implements \Magento\ConfigurableProduct\Api\LinkManagementInterface
 {
     /**
@@ -68,7 +72,7 @@ public function __construct(
     }
 
     /**
-     * {@inheritdoc}
+     * @inheritdoc
      */
     public function getChildren($sku)
     {
@@ -107,11 +111,15 @@ public function getChildren($sku)
     }
 
     /**
-     * {@inheritdoc}
+     * @inheritdoc
+     * @throws InputException
+     * @throws NoSuchEntityException
+     * @throws StateException
+     * @throws \Magento\Framework\Exception\CouldNotSaveException
      */
     public function addChild($sku, $childSku)
     {
-        $product = $this->productRepository->get($sku);
+        $product = $this->productRepository->get($sku, true);
         $child = $this->productRepository->get($childSku);
 
         $childrenIds = array_values($this->configurableType->getChildrenIds($product->getId())[0]);
@@ -150,7 +158,11 @@ public function addChild($sku, $childSku)
     }
 
     /**
-     * {@inheritdoc}
+     * @inheritdoc
+     * @throws InputException
+     * @throws NoSuchEntityException
+     * @throws StateException
+     * @throws \Magento\Framework\Exception\CouldNotSaveException
      */
     public function removeChild($sku, $childSku)
     {