diff --git a/src/_data/codebase/v2_4/mrg/module-catalog.yml b/src/_data/codebase/v2_4/mrg/module-catalog.yml
index b1cc220c689..a701b4c55fe 100644
--- a/src/_data/codebase/v2_4/mrg/module-catalog.yml
+++ b/src/_data/codebase/v2_4/mrg/module-catalog.yml
@@ -3,8 +3,105 @@ title: Catalog
 release: 2.4.3
 content: |-
   Magento_Catalog module functionality is represented by the following sub-systems:
-   - Products Management. It includes CRUD operation of product, product media, product attributes, etc...
+   - Products Management. It includes CRUD operation of product, product media, 
+   product attributes, etc...
    - Category Management. It includes CRUD operation of category, category attributes
 
   Catalog module provides mechanism for creating new product type in the system.
-  Catalog module provides API filtering that allows to limit product selection with advanced filters.
+  Catalog module provides API filtering that allows to limit product selection with 
+  advanced filters.
+
+#### Observer
+  This module observes the following events
+   `etc/events.xml`
+     - `magento_catalog_api_data_productinterface_save_before`  event in 
+     `Magento\Framework\EntityManager\Observer\BeforeEntitySave` file.
+     - `magento_catalog_api_data_productinterface_save_after`  event in 
+     `Magento\Framework\EntityManager\Observer\AfterEntitySave` file.
+     - `magento_catalog_api_data_productinterface_delete_before`  event in 
+     `Magento\Framework\EntityManager\Observer\BeforeEntityDelete` file.
+     - `magento_catalog_api_data_productinterface_delete_after`  event in 
+     `Magento\Framework\EntityManager\Observer\AfterEntityDelete` file.
+     - `magento_catalog_api_data_productinterface_load_after`  event in 
+     `Magento\Framework\EntityManager\Observer\AfterEntityLoad` file.
+     - `magento_catalog_api_data_categoryinterface_save_before`  event in 
+     `Magento\Framework\EntityManager\Observer\BeforeEntitySave` file.
+     - `magento_catalog_api_data_categoryinterface_save_after`  event in 
+     `Magento\Framework\EntityManager\Observer\AfterEntitySave` file.
+     - `magento_catalog_api_data_categoryinterface_save_after`  event in 
+     `Magento\Catalog\Observer\InvalidateCacheOnCategoryDesignChange` file.
+     - `magento_catalog_api_data_categoryinterface_delete_before`  event in 
+     `Magento\Framework\EntityManager\Observer\BeforeEntityDelete` file.
+     - `magento_catalog_api_data_categoryinterface_delete_after`  event in 
+     `Magento\Framework\EntityManager\Observer\AfterEntityDelete` file.
+     - `magento_catalog_api_data_categoryinterface_load_after`  event in 
+     `Magento\Framework\EntityManager\Observer\AfterEntityLoad` file.
+     - `magento_catalog_api_data_categorytreeinterface_save_before`  event in 
+     `Magento\Framework\EntityManager\Observer\BeforeEntitySave` file.
+     - `magento_catalog_api_data_categorytreeinterface_save_after`  event in 
+     `Magento\Framework\EntityManager\Observer\AfterEntitySave` file.
+     - `magento_catalog_api_data_categorytreeinterface_delete_before`  event in 
+     `Magento\Framework\EntityManager\Observer\BeforeEntityDelete` file.
+     - `magento_catalog_api_data_categorytreeinterface_delete_after`  event in 
+     `Magento\Framework\EntityManager\Observer\AfterEntityDelete` file.
+     - `magento_catalog_api_data_categorytreeinterface_load_after`  event in 
+     `Magento\Framework\EntityManager\Observer\AfterEntityLoad` file.
+     - `admin_system_config_changed_section_catalog`  event in 
+     `Magento\Catalog\Observer\SwitchPriceAttributeScopeOnConfigChange` file.
+     - `catalog_product_save_before`  event in 
+     `Magento\Catalog\Observer\SetSpecialPriceStartDate` file.
+     - `store_save_after`  event in 
+     `Magento\Catalog\Observer\SynchronizeWebsiteAttributesOnStoreChange` file.
+     - `catalog_product_save_commit_after`  event in 
+     `Magento\Catalog\Observer\ImageResizeAfterProductSave` file.
+     - `catalog_category_prepare_save`  event in 
+     `Magento\Catalog\Observer\CategoryDesignAuthorization` file.
+
+   `/etc/frontend/events.xml`
+     - `customer_login`  event in 
+     `Magento\Catalog\Observer\Compare\BindCustomerLoginObserver` file.
+     - `customer_logout`  event in 
+     `Magento\Catalog\Observer\Compare\BindCustomerLogoutObserver` file.
+
+   `/etc/adminhtml/events.xml`
+     - `cms_wysiwyg_images_static_urls_allowed`  event in 
+     `Magento\Catalog\Observer\CatalogCheckIsUsingStaticUrlsAllowedObserver` file.
+     - `catalog_category_change_products`  event in 
+     `Magento\Catalog\Observer\CategoryProductIndexer` file.
+     - `category_move`  event in `Magento\Catalog\Observer\FlushCategoryPagesCache` file.
+  
+  ### Layouts
+    The module interacts with the following layout handles
+
+    `view/base/layout`
+     `catalog_product_prices`
+
+    `view/adminhtml/layout`
+       `catalog_product_grouped`
+       `catalog_product_new`
+       `catalog_product_view_type_grouped`
+       `groupedproduct_edit_popup`
+       `groupedproduct_popup_grid`
+       `sales_order_creditmemo_new`
+       `sales_order_creditmemo_updateqty`
+       `sales_order_creditmemo_view`
+       `sales_order_invoice_new`
+       `sales_order_invoice_updateqty`
+       `sales_order_invoice_view`
+       `sales_order_view`
+       
+    `view/frontend/layout`
+       `catalog_product_rss_feed_renderer_list`
+       `catalog_product_view_type_grouped`
+       `checkout_cart_item_renderers`
+       `checkout_onepage_review_item_renderers`
+       `sales_email_order_creditmemo_renderers`
+       `sales_email_order_invoice_renderers`
+       `sales_email_order_renderers`
+       `sales_guest_invoice`
+       `sales_order_creditmemo_renderers`
+       `sales_order_invoice_renderers`
+       `sales_order_item_renderers`
+       `sales_order_print_creditmemo_renderers`
+       `sales_order_print_invoice_renderers`
+       `sales_order_print_renderers`