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## Resource: Introduction

## Article: Introduction

## Article Link: https://dev.wix.com/docs/api-reference/business-solutions/stores/catalog-v3/customizations-v3/introduction.md

## Article Content:

# About the Customizations API

The Customizations API allows you to create and manage product customizations, which include options and modifiers. These can be applied to [products](https://dev.wix.com/docs/api-reference/business-solutions/stores/catalog-v3/products-v3/introduction.md) to allow customers to customize, select a specific product variant, or add on to a product.

Customizations can be either options or modifiers:

- Options create product variants that affect inventory, SKU, and pricing. For example, a "Size" option with "Small", "Medium", "Large" choices creates three variants.
- Modifiers collect additional information from customers without creating variants. For example, a "Gift Message" modifier allows customers to enter text.

For a comprehensive explanation of options, modifiers, and variants, see [About Product Options and Variants](https://dev.wix.com/docs/api-reference/business-solutions/stores/catalog-v3/about-product-options-and-variants.md).

With the Customizations API, you can:
- Create and manage reusable customizations.
- Retrieve information about existing customizations.
- Delete existing customizations.

## Customizations and products

Customizations can be created independently and then assigned to products, or they can be created inline when creating a product. When you create a product with inline options or modifiers (without referencing existing customization IDs), new standalone customization entities are automatically created, which can then be reused across other products.

## Deleting customizations

Options and modifiers have different deletion behavior:
- **Options** can't be deleted while assigned to any product, because they affect product variants and inventory.
- **Modifiers** can be deleted freely. When a modifier is deleted, it's automatically removed from all products that reference it.

## Deleting choices

Choices within options can't be removed if they're assigned to one or more product variants. Choices within modifiers can be removed freely.

## Before you begin

It's important to note the following points before starting to code:

- The Wix user must install the [Wix Stores app](https://www.wix.com/app-market/wix-stores).

## Use cases

- [Set up customizations for a clothing store](https://dev.wix.com/docs/api-reference/business-solutions/stores/catalog-v3/customizations-v3/sample-flows.md#set-up-customizations-for-a-clothing-store)
- [Create a product with new options](https://dev.wix.com/docs/api-reference/business-solutions/stores/catalog-v3/customizations-v3/sample-flows.md#create-a-product-with-new-options)
- [Create a product with new modifiers](https://dev.wix.com/docs/api-reference/business-solutions/stores/catalog-v3/customizations-v3/sample-flows.md#create-a-product-with-new-modifiers)

## Terminology

For a comprehensive glossary of Catalog V3 terms, see [Terminology](https://dev.wix.com/docs/api-reference/business-solutions/stores/catalog-v3/terminology.md).

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