diff --git a/app/code/Magento/AdvancedPricingImportExport/Model/Export/AdvancedPricing.php b/app/code/Magento/AdvancedPricingImportExport/Model/Export/AdvancedPricing.php
index a92df095036f3..25733921128d0 100644
--- a/app/code/Magento/AdvancedPricingImportExport/Model/Export/AdvancedPricing.php
+++ b/app/code/Magento/AdvancedPricingImportExport/Model/Export/AdvancedPricing.php
@@ -104,7 +104,6 @@ class AdvancedPricing extends \Magento\CatalogImportExport\Model\Export\Product
      * @param \Magento\CatalogImportExport\Model\Export\RowCustomizerInterface $rowCustomizer
      * @param ImportProduct\StoreResolver $storeResolver
      * @param \Magento\Customer\Api\GroupRepositoryInterface $groupRepository
-     * @throws \Magento\Framework\Exception\LocalizedException
      * @SuppressWarnings(PHPMD.ExcessiveParameterList)
      */
     public function __construct(
@@ -193,6 +192,7 @@ protected function initTypeModels()
      * Export process
      *
      * @return string
+     * @throws \Magento\Framework\Exception\LocalizedException
      */
     public function export()
     {
@@ -586,8 +586,8 @@ protected function getTierPrices(array $listSku, $table)
      * Get Website code.
      *
      * @param int $websiteId
-     *
      * @return string
+     * @throws \Magento\Framework\Exception\LocalizedException
      */
     protected function _getWebsiteCode(int $websiteId): string
     {
@@ -617,8 +617,9 @@ protected function _getWebsiteCode(int $websiteId): string
      *
      * @param int $groupId
      * @param int $allGroups
-     *
      * @return string
+     * @throws \Magento\Framework\Exception\LocalizedException
+     * @throws \Magento\Framework\Exception\NoSuchEntityException
      */
     protected function _getCustomerGroupById(
         int $groupId,
@@ -644,4 +645,4 @@ public function getEntityTypeCode()
         }
         return $this->_entityTypeCode;
     }
-}
+}
\ No newline at end of file
diff --git a/app/code/Magento/AdvancedPricingImportExport/Model/Import/AdvancedPricing.php b/app/code/Magento/AdvancedPricingImportExport/Model/Import/AdvancedPricing.php
index 4663aea7a7dfc..2e17e734b1e60 100644
--- a/app/code/Magento/AdvancedPricingImportExport/Model/Import/AdvancedPricing.php
+++ b/app/code/Magento/AdvancedPricingImportExport/Model/Import/AdvancedPricing.php
@@ -8,7 +8,6 @@
 use Magento\CatalogImportExport\Model\Import\Product as ImportProduct;
 use Magento\CatalogImportExport\Model\Import\Product\RowValidatorInterface as ValidatorInterface;
 use Magento\ImportExport\Model\Import\ErrorProcessing\ProcessingErrorAggregatorInterface;
-use Magento\Framework\App\ResourceConnection;
 
 /**
  * Class AdvancedPricing
@@ -618,6 +617,7 @@ protected function processCountNewPrices(array $tierPrices)
      * Get product entity link field
      *
      * @return string
+     * @throws \Exception
      */
     private function getProductEntityLinkField()
     {
diff --git a/app/code/Magento/AdvancedPricingImportExport/Model/Import/AdvancedPricing/Validator.php b/app/code/Magento/AdvancedPricingImportExport/Model/Import/AdvancedPricing/Validator.php
index 25a9fc244fe51..d939a3f7c392e 100644
--- a/app/code/Magento/AdvancedPricingImportExport/Model/Import/AdvancedPricing/Validator.php
+++ b/app/code/Magento/AdvancedPricingImportExport/Model/Import/AdvancedPricing/Validator.php
@@ -28,6 +28,7 @@ public function __construct($validators = [])
      *
      * @param array $value
      * @return bool
+     * @throws \Zend_Validate_Exception
      */
     public function isValid($value)
     {
diff --git a/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Export/AdvancedPricingTest.php b/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Export/AdvancedPricingTest.php
index 48b4c58918740..6b266c76c32f3 100644
--- a/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Export/AdvancedPricingTest.php
+++ b/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Export/AdvancedPricingTest.php
@@ -151,10 +151,13 @@ protected function setUp()
             ]
         );
         $this->exportConfig = $this->createMock(\Magento\ImportExport\Model\Export\Config::class);
-        $this->productFactory = $this->createPartialMock(\Magento\Catalog\Model\ResourceModel\ProductFactory::class, [
+        $this->productFactory = $this->createPartialMock(
+            \Magento\Catalog\Model\ResourceModel\ProductFactory::class,
+            [
                 'create',
                 'getTypeId',
-            ]);
+            ]
+        );
         $this->attrSetColFactory = $this->createPartialMock(
             \Magento\Eav\Model\ResourceModel\Entity\Attribute\Set\CollectionFactory::class,
             [
@@ -185,11 +188,14 @@ protected function setUp()
             \Magento\CatalogImportExport\Model\Import\Product\StoreResolver::class
         );
         $this->groupRepository = $this->createMock(\Magento\Customer\Api\GroupRepositoryInterface::class);
-        $this->writer = $this->createPartialMock(\Magento\ImportExport\Model\Export\Adapter\AbstractAdapter::class, [
-                'setHeaderCols',
-                'writeRow',
-                'getContents',
-            ]);
+        $this->writer = $this->createPartialMock(
+            \Magento\ImportExport\Model\Export\Adapter\AbstractAdapter::class,
+            [
+            'setHeaderCols',
+            'writeRow',
+            'getContents',
+            ]
+        );
         $constructorMethods = [
             'initTypeModels',
             'initAttributes',
@@ -347,6 +353,7 @@ protected function tearDown()
      * @param $object
      * @param $property
      * @return mixed
+     * @throws \ReflectionException
      */
     protected function getPropertyValue($object, $property)
     {
@@ -362,6 +369,8 @@ protected function getPropertyValue($object, $property)
      * @param $object
      * @param $property
      * @param $value
+     * @return mixed
+     * @throws \ReflectionException
      */
     protected function setPropertyValue(&$object, $property, $value)
     {
diff --git a/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricing/Validator/TierPriceTest.php b/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricing/Validator/TierPriceTest.php
index 7a81ccae6f0d0..2c930237da831 100644
--- a/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricing/Validator/TierPriceTest.php
+++ b/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricing/Validator/TierPriceTest.php
@@ -346,6 +346,7 @@ public function isValidAddMessagesCallDataProvider()
      * @param object $object
      * @param string $property
      * @return mixed
+     * @throws \ReflectionException
      */
     protected function getPropertyValue($object, $property)
     {
@@ -363,6 +364,7 @@ protected function getPropertyValue($object, $property)
      * @param string $property
      * @param mixed $value
      * @return object
+     * @throws \ReflectionException
      */
     protected function setPropertyValue(&$object, $property, $value)
     {
diff --git a/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricingTest.php b/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricingTest.php
index 08743b9fa7f2c..340e81746f029 100644
--- a/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricingTest.php
+++ b/app/code/Magento/AdvancedPricingImportExport/Test/Unit/Model/Import/AdvancedPricingTest.php
@@ -209,6 +209,10 @@ public function testGetEntityTypeCode()
      * Test method validateRow against its result.
      *
      * @dataProvider validateRowResultDataProvider
+     * @param array $rowData
+     * @param string|null $behavior
+     * @param bool $expectedResult
+     * @throws \ReflectionException
      */
     public function testValidateRowResult($rowData, $behavior, $expectedResult)
     {
@@ -234,6 +238,10 @@ public function testValidateRowResult($rowData, $behavior, $expectedResult)
      * Test method validateRow whether AddRowError is called.
      *
      * @dataProvider validateRowAddRowErrorCallDataProvider
+     * @param array $rowData
+     * @param string|null $behavior
+     * @param string $error
+     * @throws \ReflectionException
      */
     public function testValidateRowAddRowErrorCall($rowData, $behavior, $error)
     {
@@ -324,6 +332,13 @@ public function testSaveAdvancedPricing()
      * Take into consideration different data and check relative internal calls.
      *
      * @dataProvider saveAndReplaceAdvancedPricesAppendBehaviourDataProvider
+     * @param array $data
+     * @param string $tierCustomerGroupId
+     * @param string $groupCustomerGroupId
+     * @param string $tierWebsiteId
+     * @param string $groupWebsiteId
+     * @param array $expectedTierPrices
+     * @throws \ReflectionException
      */
     public function testSaveAndReplaceAdvancedPricesAppendBehaviourDataAndCalls(
         $data,
@@ -956,6 +971,7 @@ public function processCountExistingPricesDataProvider()
      * @param $object
      * @param $property
      * @return mixed
+     * @throws \ReflectionException
      */
     protected function getPropertyValue($object, $property)
     {
@@ -972,6 +988,8 @@ protected function getPropertyValue($object, $property)
      * @param $object
      * @param $property
      * @param $value
+     * @return mixed
+     * @throws \ReflectionException
      */
     protected function setPropertyValue(&$object, $property, $value)
     {
@@ -989,8 +1007,8 @@ protected function setPropertyValue(&$object, $property, $value)
      * @param object $object
      * @param string $method
      * @param array $args
-     *
-     * @return mixed the method result.
+     * @return mixed
+     * @throws \ReflectionException
      */
     private function invokeMethod($object, $method, $args = [])
     {
@@ -1007,6 +1025,7 @@ private function invokeMethod($object, $method, $args = [])
      * @param array $methods
      *
      * @return \PHPUnit_Framework_MockObject_MockObject
+     * @throws \ReflectionException
      */
     private function getAdvancedPricingMock($methods = [])
     {