diff --git a/app/code/Magento/AsynchronousOperations/etc/db_schema.xml b/app/code/Magento/AsynchronousOperations/etc/db_schema.xml
index 5d49d71ee46b0..ab482d2e2c761 100644
--- a/app/code/Magento/AsynchronousOperations/etc/db_schema.xml
+++ b/app/code/Magento/AsynchronousOperations/etc/db_schema.xml
@@ -34,7 +34,7 @@
     <table name="magento_operation" resource="default" engine="innodb" comment="Operation entity">
         <column xsi:type="int" name="id" padding="10" unsigned="true" nullable="false" identity="true"
                 comment="Operation ID"/>
-        <column xsi:type="int" name="operation_key" padding="10" unsigned="true" nullable="false"
+        <column xsi:type="int" name="operation_key" padding="10" unsigned="true" nullable="true"
                 comment="Operation Key"/>
         <column xsi:type="varbinary" name="bulk_uuid" nullable="true" length="39" comment="Related Bulk UUID"/>
         <column xsi:type="varchar" name="topic_name" nullable="true" length="255"
diff --git a/dev/tests/integration/testsuite/Magento/Catalog/Model/Attribute/Backend/ConsumerTest.php b/dev/tests/integration/testsuite/Magento/Catalog/Model/Attribute/Backend/ConsumerTest.php
new file mode 100644
index 0000000000000..8dffcdbdd4582
--- /dev/null
+++ b/dev/tests/integration/testsuite/Magento/Catalog/Model/Attribute/Backend/ConsumerTest.php
@@ -0,0 +1,163 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+declare(strict_types=1);
+
+namespace Magento\Catalog\Model\Attribute\Backend;
+
+use Magento\AsynchronousOperations\Api\Data\OperationInterface;
+use Magento\AsynchronousOperations\Api\Data\OperationInterfaceFactory;
+use Magento\AsynchronousOperations\Model\BulkManagement;
+use Magento\AsynchronousOperations\Model\BulkStatus;
+use Magento\Framework\MessageQueue\BulkPublisherInterface;
+use Magento\Framework\ObjectManagerInterface;
+use Magento\TestFramework\Helper\Bootstrap;
+use PHPUnit\Framework\TestCase;
+use Magento\Catalog\Helper\Product;
+use Magento\Catalog\Model\Indexer\Product\Flat\Processor as FlatProcessor;
+use Magento\Catalog\Model\Indexer\Product\Price\Processor as PriceProcessor;
+use Magento\Framework\Bulk\OperationManagementInterface;
+use Magento\Catalog\Model\Product\Action;
+use Psr\Log\LoggerInterface;
+use Magento\Framework\Serialize\SerializerInterface;
+use Magento\Framework\EntityManager\EntityManager;
+use Magento\Catalog\Model\Attribute\Backend\Consumer;
+
+/**
+ * Test for Mysql Consumer execution
+ *
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
+ */
+class ConsumerTest extends TestCase
+{
+    const BULK_UUID = '5a12c1bd-a8b5-41d4-8c00-3f5bcaa6d3c8';
+
+    /**
+     * @var Consumer
+     */
+    private $model;
+
+    /**
+     * @var \PHPUnit\Framework\MockObject\MockObject
+     */
+    private $publisherMock;
+
+    /**
+     * @var BulkManagement
+     */
+    private $bulkManagement;
+
+    /**
+     * @var BulkStatus
+     */
+    private $bulkStatus;
+
+    /**
+     * @var ObjectManagerInterface
+     */
+    private $objectManager;
+
+    /**
+     * @var SerializerInterface
+     */
+    private $serializer;
+
+    /**
+     * @inheritdoc
+     */
+    protected function setUp(): void
+    {
+        $this->objectManager = Bootstrap::getObjectManager();
+        $this->publisherMock = $this->getMockForAbstractClass(BulkPublisherInterface::class);
+
+        $this->bulkManagement = $this->objectManager->create(
+            BulkManagement::class,
+            [
+                'publisher' => $this->publisherMock
+            ]
+        );
+        $this->bulkStatus = $this->objectManager->get(BulkStatus::class);
+        $catalogProductMock = $this->createMock(Product::class);
+        $productFlatIndexerProcessorMock = $this->createMock(
+            FlatProcessor::class
+        );
+        $productPriceIndexerProcessorMock = $this->createMock(
+            PriceProcessor::class
+        );
+        $operationManagementMock = $this->createMock(
+            OperationManagementInterface::class
+        );
+        $actionMock = $this->createMock(Action::class);
+        $loggerMock = $this->createMock(LoggerInterface::class);
+        $this->serializer = $this->objectManager->get(SerializerInterface::class);
+        $entityManager = $this->objectManager->get(EntityManager::class);
+        $this->model = $this->objectManager->create(
+            Consumer::class,
+            [
+                'catalogProduct' => $catalogProductMock,
+                'productFlatIndexerProcessor' => $productFlatIndexerProcessorMock,
+                'productPriceIndexerProcessor' => $productPriceIndexerProcessorMock,
+                'operationManagement' => $operationManagementMock,
+                'action' => $actionMock,
+                'logger' => $loggerMock,
+                'serializer' => $this->serializer,
+                'entityManager' => $entityManager
+            ]
+        );
+
+        parent::setUp();
+    }
+
+    /**
+     * Testing saving bulk operation during processing operation by attribute backend consumer
+     */
+    public function testSaveOperationDuringProcess()
+    {
+        $operation = $this->prepareUpdateAttributesBulkAndOperation();
+        try {
+            $this->model->process($operation);
+        } catch (\Exception $e) {
+            $this->fail(sprintf('Operation save process failed.: %s', $e->getMessage()));
+        }
+        $operationStatus = $operation->getStatus();
+        $this->assertEquals(
+            1,
+            $this->bulkStatus->getOperationsCountByBulkIdAndStatus(self::BULK_UUID, $operationStatus)
+        );
+    }
+
+    /**
+     * Schedules test bulk and returns operation
+     * @return OperationInterface
+     */
+    private function prepareUpdateAttributesBulkAndOperation(): OperationInterface
+    {
+        // general bulk information
+        $bulkUuid = self::BULK_UUID;
+        $bulkDescription = 'Update attributes for 2 selected products';
+        $topicName = 'product_action_attribute.update';
+        $userId = 1;
+        /** @var OperationInterfaceFactory $operationFactory */
+        $operationFactory = $this->objectManager->get(OperationInterfaceFactory::class);
+        $operation = $operationFactory->create();
+        $operation->setBulkUuid($bulkUuid)
+            ->setTopicName($topicName)
+            ->setSerializedData($this->serializer->serialize(
+                ['product_ids' => [1,3], 'attributes' => [], 'store_id' => '0']
+            ));
+        $this->bulkManagement->scheduleBulk($bulkUuid, [$operation], $bulkDescription, $userId);
+        return $operation;
+    }
+
+    /**
+     * Clear created bulk and operation
+     */
+    protected function tearDown(): void
+    {
+        $this->bulkManagement->deleteBulk(self::BULK_UUID);
+        parent::tearDown();
+    }
+}