Commerce Currency Mismatch Prevention

This module solves the critical "The provided prices have mismatched currencies" error that occurs in Drupal Commerce when adding products with different currencies to the same cart.

Features

Automatically prevents adding products with different currencies to the same cart, avoiding the CurrencyMismatchException error. Choose between behaviors: remove new product, clear cart and add new product.

Requirements

Commerce Currency Mismatch Prevention module requires Drupal Commerce 3 module enabled.

Configuration

This module provides a configuration options at Commerce > Configuration > Store > Currency mismatch prevention where you can set:

• Remove new product, keep current cart items: The new product is removed, and the existing cart items remain unchanged.
• Remove existing cart items, add new product: All existing cart items are removed, and the new product is added to the cart.
• Disabled: Allow adding products with different currencies (may cause errors)

Usage

When a user attempts to add a product with a different currency than the existing cart items, the module intervenes based on the configured behavior.

Installation

Install as you would normally install a contributed Drupal module. For further information, see [Installing Drupal Modules](https://www.drupal.org/docs/extending-drupal/installing-drupal-modules).

Similar modules

• Commerce Currency Resolver focuses on currency conversion and displaying prices in customer-preferred currencies. Commerce Currency Mismatch Prevention manages cart conflicts without any exchange rate calculations.