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## Resource: Introduction

## Article: About Validations

## Article Link: https://dev.wix.com/docs/api-reference/business-solutions/e-commerce/extensions/validations/introduction.md

## Article Content:

# About Validations

Validations enable businesses to apply custom validation logic to carts and checkouts to enforce specific business rules and purchase restrictions. This functionality allows businesses to implement checks such as minimum cart values, quantity limits, membership requirements, or regional restrictions that must pass before customers can complete their purchase.

This section covers:

- **[Validations Integration Service Plugin](https://dev.wix.com/docs/rest/business-solutions/e-commerce/extensions/validations/validations-integration-service-plugin/introduction.md)**: Apply custom validation logic to carts and checkouts to enforce business rules such as minimum cart values, quantity limits, and purchase restrictions.

## See also

- [About Extensions](https://dev.wix.com/docs/rest/business-solutions/e-commerce/extensions/introduction.md)
- [About Purchase Flow](https://dev.wix.com/docs/rest/business-solutions/e-commerce/purchase-flow/introduction.md) 
- [Extend the eCommerce Platform with Service Plugins](https://dev.wix.com/docs/rest/business-solutions/e-commerce/guides/extend-the-e-commerce-platform-with-service-plugins.md)