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# Magento_Msrp module
The **Magento_Msrp** module is responsible for Manufacturer’s Suggested Retail Price functionality.
A current module provides base functional for msrp pricing rendering, configuration and calculation.
## Installation
The Magento_Msrp module creates the following attributes:
Entity type - `catalog_product`.
Attribute group - `Advanced Pricing`.
- `msrp` - Manufacturer's Suggested Retail Price
- `msrp_display_actual_price_type` -Display Actual Price
**Pay attention** if described attributes not removed when the module is removed/disabled, it would trigger errors
because they use models and blocks from Magento_Msrp module:
- `\Magento\Msrp\Block\Adminhtml\Product\Helper\Form\Type`
- `\Magento\Msrp\Model\Product\Attribute\Source\Type\Price`
- `\Magento\Msrp\Block\Adminhtml\Product\Helper\Form\Type\Price`
For information about a module installation in Magento 2, see [Enable or disable modules](https://devdocs.magento.com/guides/v2.4/install-gde/install/cli/install-cli-subcommands-enable.html).
## Structure
`Pricing\` - directory contains interfaces and implementation for msrp pricing calculations
(`\Magento\Msrp\Pricing\MsrpPriceCalculatorInterface`), price renderers
and price models.
`Pricing\Price\` - the directory contains declares msrp price model interfaces and implementations.
`Pricing\Renderer\` - contains price renderers implementations.
For information about a typical file structure of a module in Magento 2,
see [Module file structure](https://devdocs.magento.com/guides/v2.4/extension-dev-guide/build/module-file-structure.html#module-file-structure).
## Extensibility
Developers can pass custom `msrpPriceCalculators` for `Magento\Msrp\Pricing\MsrpPriceCalculator` using type configuration using `di.xml`.
For example:
```
<type name="Magento\Msrp\Pricing\MsrpPriceCalculator">
<arguments>
<argument name="msrpPriceCalculators" xsi:type="array">
<item name="configurable" xsi:type="array">
<item name="productType" xsi:type="const">Magento\ConfigurableProduct\Model\Product\Type\Configurable::TYPE_CODE</item>
<item name="priceCalculator" xsi:type="object">Magento\MsrpConfigurableProduct\Pricing\MsrpPriceCalculator</item>
</item>
</argument>
</arguments>
</type>
```
More information about [type configuration](https://devdocs.magento.com/guides/v2.4/extension-dev-guide/build/di-xml-file.html).
Extension developers can interact with the Magento_Msrp module. For more information about the Magento extension mechanism, see [Magento plug-ins](https://devdocs.magento.com/guides/v2.4/extension-dev-guide/plugins.html).
[The Magento dependency injection mechanism](https://devdocs.magento.com/guides/v2.4/extension-dev-guide/depend-inj.html) enables you to override the functionality of the Magento_Msrp module.
### Events
This module observes the following event:
`etc/frontend/`
- `sales_quote_collect_totals_after` in the `Magento\Msrp\Observer\Frontend\Quote\SetCanApplyMsrpObserver` file.
`etc/webapi_rest`
- `sales_quote_collect_totals_after` in the `Magento\Msrp\Observer\Frontend\Quote\SetCanApplyMsrpObserver` file.
`etc/webapi_soap`
- `sales_quote_collect_totals_after` in the `Magento\Msrp\Observer\Frontend\Quote\SetCanApplyMsrpObserver` file.
For information about an event in Magento 2, see [Events and observers](https://devdocs.magento.com/guides/v2.4/extension-dev-guide/events-and-observers.html#events).
### Layouts
The module interacts with the following layout handles:
`view/base/layout` directory:
- `catalog_product_prices`
- `cms_index_index`
`view/frontend/layout` directory:
- `catalog_category_view`
- `catalog_product_compare_index`
- `catalog_product_view`
- `catalogsearch_advanced_result`
- `catalogsearch_result_index`
- `checkout_cart_sidebar_total_renderers`
- `checkout_onepage_failure`
- `checkout_onepage_success`
- `review_product_list`
- `wishlist_index_configure_type_downloadable`
- `wishlist_index_index`
- `wishlist_search_view`
- `wishlist_shared_index`
This module introduces the following layouts and layout handles:
`view/frontend/layout` directory:
- `msrp_popup`
### UI components
Module provides product admin form modifier:
`Magento\Msrp\Ui\DataProvider\Product\Form\Modifier\Msrp` - removes `msrp_display_actual_price_type` field from the form if config disabled else adds `validate-zero-or-greater` validation to the fild.
## Additional information
### Catalog attributes
A current module extends `etc/catalog_attributes.xml` and provides following attributes for `quote_item` group:
- `msrp`
- `msrp_display_actual_price_type`
### Extension Attributes
The Magento_Msrp provides extension attributes for `Magento\Catalog\Api\Data\ProductRender\PriceInfoInterface`
- attribute code: `msrp`
- attribute type: `Magento\Msrp\Api\Data\ProductRender\MsrpPriceInfoInterface`