diff --git a/app/code/Magento/ImportExport/Block/Adminhtml/Import/Edit/Form.php b/app/code/Magento/ImportExport/Block/Adminhtml/Import/Edit/Form.php
index 8fd73e46608..68b4d849099 100644
--- a/app/code/Magento/ImportExport/Block/Adminhtml/Import/Edit/Form.php
+++ b/app/code/Magento/ImportExport/Block/Adminhtml/Import/Edit/Form.php
@@ -113,6 +113,7 @@ protected function _prepareForm()
                     'class' => $behaviorCode,
                     'onchange' => 'varienImport.handleImportBehaviorSelector();',
                     'note' => ' ',
+                    'after_element_html' => $this->getImportBehaviorTooltip(),
                 ]
             );
             $fieldsets[$behaviorCode]->addField(
@@ -252,4 +253,19 @@ protected function getDownloadSampleFileHtml()
             . '</a></span>';
         return $html;
     }
+
+    /**
+     * Get Import Behavior field tooltip
+     *
+     * @return string
+     */
+    private function getImportBehaviorTooltip()
+    {
+        $html = '<div class="admin__field-tooltip tooltip">
+            <a class="admin__field-tooltip-action action-help" target="_blank" title="What is this?" 
+                href="https://docs.magento.com/m2/ce/user_guide/system/data-import.html"><span>'
+            . __('What is this?')
+            . '</span></a></div>';
+        return $html;
+    }
 }
diff --git a/app/code/Magento/ImportExport/Model/Source/Import/Behavior/Basic.php b/app/code/Magento/ImportExport/Model/Source/Import/Behavior/Basic.php
index f28aae9f8ae..7f90e052acc 100644
--- a/app/code/Magento/ImportExport/Model/Source/Import/Behavior/Basic.php
+++ b/app/code/Magento/ImportExport/Model/Source/Import/Behavior/Basic.php
@@ -39,7 +39,9 @@ public function getCode()
     public function getNotes($entityCode)
     {
         $messages = ['catalog_product' => [
-            \Magento\ImportExport\Model\Import::BEHAVIOR_REPLACE => __("Note: Product IDs will be regenerated.")
+            \Magento\ImportExport\Model\Import::BEHAVIOR_APPEND => __("New product data is added to the existing product data for the existing entries in the database. All fields except sku can be updated."),
+            \Magento\ImportExport\Model\Import::BEHAVIOR_REPLACE => __("The existing product data is replaced with new data. <b>Exercise caution when replacing data because the existing product data will be completely cleared and all references in the system will be lost.</b>"),
+            \Magento\ImportExport\Model\Import::BEHAVIOR_DELETE => __("Any entities in the import data that already exist in the database are deleted from the database."),
         ]];
         return isset($messages[$entityCode]) ? $messages[$entityCode] : [];
     }
diff --git a/app/code/Magento/ImportExport/i18n/en_US.csv b/app/code/Magento/ImportExport/i18n/en_US.csv
index 60c9ee4c5a9..cae4d6e1986 100644
--- a/app/code/Magento/ImportExport/i18n/en_US.csv
+++ b/app/code/Magento/ImportExport/i18n/en_US.csv
@@ -119,3 +119,6 @@ User,User
 "Error File","Error File"
 "Execution Time","Execution Time"
 Summary,Summary
+"New product data is added to existing product data entries in the database. All fields except SKU can be updated.","New product data is added to existing product data entries in the database. All fields except SKU can be updated."
+"All existing product data is replaced with the imported new data. <b>Exercise caution when replacing data. All existing product data will be completely cleared and all references in the system will be lost.</b>","All existing product data is replaced with the imported new data. <b>Exercise caution when replacing data. All existing product data will be completely cleared and all references in the system will be lost.</b>"
+"Any entities in the import data that match existing entities in the database are deleted from the database.","Any entities in the import data that match existing entities in the database are deleted from the database."