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Model

BillingAddressValidationRule

Magento\Quote\Model\ValidationRules\BillingAddressValidationRule

What it does

This class validates the billing address of a quote during the checkout process in Magento 2.

Developers use this validation rule to ensure that all required billing address fields are properly filled out before allowing order placement.

It integrates with Magento's validation framework to return structured error messages when billing address data is incomplete or invalid.

Public Methods

  • validate()