diff --git a/src/Sylius/Bundle/AdminApiBundle/Resources/config/routing/checkout.yml b/src/Sylius/Bundle/AdminApiBundle/Resources/config/routing/checkout.yml
index 121fa811b5c..860884c338f 100644
--- a/src/Sylius/Bundle/AdminApiBundle/Resources/config/routing/checkout.yml
+++ b/src/Sylius/Bundle/AdminApiBundle/Resources/config/routing/checkout.yml
@@ -75,7 +75,10 @@ sylius_admin_api_checkout_complete:
         _controller: sylius.controller.order:updateAction
         _sylius:
             serialization_version: $version
-            form: Sylius\Bundle\CoreBundle\Form\Type\Checkout\CompleteType
+            form:
+                type: Sylius\Bundle\CoreBundle\Form\Type\Checkout\CompleteType
+                options:
+                    validation_groups: 'sylius_checkout_complete'
             repository:
                 method: find
                 arguments: [$orderId]
diff --git a/tests/Controller/CheckoutCompleteApiTest.php b/tests/Controller/CheckoutCompleteApiTest.php
index 58cfe2af03f..cd43b89bc69 100644
--- a/tests/Controller/CheckoutCompleteApiTest.php
+++ b/tests/Controller/CheckoutCompleteApiTest.php
@@ -11,9 +11,11 @@
 
 namespace Sylius\Tests\Controller;
 
-use Sylius\Component\Core\Model\OrderInterface;
-use Sylius\Component\Core\Model\PaymentMethodInterface;
-use Sylius\Component\Core\Model\ShippingMethodInterface;
+use Doctrine\ORM\EntityManagerInterface;
+use Sylius\Component\Core\Model\ProductVariant;
+use Sylius\Component\Product\Model\ProductInterface;
+use Sylius\Component\Product\Repository\ProductRepositoryInterface;
+use Sylius\Component\Product\Repository\ProductVariantRepositoryInterface;
 use Symfony\Component\HttpFoundation\Response;
 
 /**
@@ -64,6 +66,72 @@ public function it_does_not_allow_to_complete_order_that_is_not_addressed_and_ha
         $this->assertResponse($response, 'checkout/complete_invalid_order_state', Response::HTTP_INTERNAL_SERVER_ERROR);
     }
 
+    /**
+     * @test
+     */
+    public function it_does_not_allow_to_complete_order_with_disabled_product()
+    {
+        $this->loadFixturesFromFile('authentication/api_administrator.yml');
+        $this->loadFixturesFromFile('resources/checkout.yml');
+
+        $cartId = $this->createCart();
+        $this->addItemToCart($cartId);
+        $this->addressOrder($cartId);
+        $this->selectOrderShippingMethod($cartId);
+        $this->selectOrderPaymentMethod($cartId);
+
+        /** @var ProductRepositoryInterface $productRepository */
+        $productRepository = $this->client->getContainer()->get('sylius.repository.product');
+        /** @var ProductInterface $product */
+        $product = $productRepository->findOneBy(['code' => 'MUG']);
+        $this->assertNotNull($product);
+        $product->disable();
+
+        /** @var EntityManagerInterface $productManager */
+        $productManager = $this->client->getContainer()->get('sylius.manager.product');
+        $productManager->persist($product);
+        $productManager->flush();
+
+        $this->client->request('PUT', $this->getCheckoutCompleteUrl($cartId), [], [], static::$authorizedHeaderWithContentType);
+
+        $response = $this->client->getResponse();
+        $this->assertResponse($response, 'checkout/complete_validation_failed_disabled_product', Response::HTTP_BAD_REQUEST);
+    }
+
+    /**
+     * @test
+     */
+    public function it_does_not_allow_to_complete_order_with_insufficient_stock()
+    {
+        $this->loadFixturesFromFile('authentication/api_administrator.yml');
+        $this->loadFixturesFromFile('resources/checkout.yml');
+
+        $cartId = $this->createCart();
+        $this->addItemToCart($cartId);
+        $this->addressOrder($cartId);
+        $this->selectOrderShippingMethod($cartId);
+        $this->selectOrderPaymentMethod($cartId);
+
+        /** @var ProductVariantRepositoryInterface $productVariantRepository */
+        $productVariantRepository = $this->client->getContainer()->get('sylius.repository.product_variant');
+        /** @var ProductVariant $productVariant */
+        $productVariant = $productVariantRepository->findOneByCodeAndProductCode('MUG_SW', 'MUG');
+        $this->assertNotNull($productVariant);
+        $productVariant->setTracked(true);
+        $productVariant->setOnHand(0);
+        $productVariant->setOnHold(0);
+
+        /** @var EntityManagerInterface $productVariantManager */
+        $productVariantManager = $this->client->getContainer()->get('sylius.manager.product_variant');
+        $productVariantManager->persist($productVariant);
+        $productVariantManager->flush();
+
+        $this->client->request('PUT', $this->getCheckoutCompleteUrl($cartId), [], [], static::$authorizedHeaderWithContentType);
+
+        $response = $this->client->getResponse();
+        $this->assertResponse($response, 'checkout/complete_validation_failed_insufficient_stock', Response::HTTP_BAD_REQUEST);
+    }
+
     /**
      * @test
      */
diff --git a/tests/Responses/Expected/checkout/complete_validation_failed_disabled_product.json b/tests/Responses/Expected/checkout/complete_validation_failed_disabled_product.json
new file mode 100644
index 00000000000..58bb3f0df61
--- /dev/null
+++ b/tests/Responses/Expected/checkout/complete_validation_failed_disabled_product.json
@@ -0,0 +1,12 @@
+{
+    "code": 400,
+    "message": "Validation Failed",
+    "errors": {
+        "errors": [
+            "This product Mug has been disabled."
+        ],
+        "children": {
+            "notes": {}
+        }
+    }
+}
diff --git a/tests/Responses/Expected/checkout/complete_validation_failed_insufficient_stock.json b/tests/Responses/Expected/checkout/complete_validation_failed_insufficient_stock.json
new file mode 100644
index 00000000000..94374c03cb7
--- /dev/null
+++ b/tests/Responses/Expected/checkout/complete_validation_failed_insufficient_stock.json
@@ -0,0 +1,12 @@
+{
+    "code": 400,
+    "message": "Validation Failed",
+    "errors": {
+        "errors": [
+            "Mug does not have sufficient stock."
+        ],
+        "children": {
+            "notes": {}
+        }
+    }
+}