apfs-disable-coupons-for-cart-with-subscription-items.php

<?php
/**
 * Plugin Name: All Products for WooCommerce Subscriptions - Disable Coupons When Cart contains products on Subscription
 * Plugin URI: https://woocommerce.com/products/all-products-for-woocommerce-subscriptions/
 * Description: Use this snippet to prevent coupons from applying in the cart if there is at least one product on Subscription there.
 * Version: 1.0
 * Author: WooCommerce
 * Author URI: https://woocommerce.com/
 * Developer: Jason Kytros
 *
 *
 * Copyright: © 2021 Automattic.
 * License: GNU General Public License v3.0
 * License URI: http://www.gnu.org/licenses/gpl-3.0.html
 */

add_filter( 'woocommerce_coupon_is_valid', 'apfs_disable_for_products_on_subscription', 10, 3 );

function apfs_disable_for_products_on_subscription( $is_valid, $coupon, $object ){
	
	$cart_contents = WC()->cart->cart_contents;
	
	foreach ( $cart_contents as $cart_item ) {
		
		if ( ! empty( $cart_item[ 'wcsatt_data'][ 'active_subscription_scheme' ] ) ) {
			$is_valid = false;
			break;
		}
	}
	return $is_valid;
}

This snippet will work but, when applying a coupon manually in a new order using the Dashboard a "Coupon is not valid." error message will appear, any way to fix that?

@somewherewarm-snippets

This code works but when you want to create a manual order form the backend it gives an error when adding a coupon.

Any ideas?

Thanks