Force registering when buying specific products on WooCommerce

functions.php

<?php
  
/* 
 * 
 * Force registering when buying specific products on WooCommerce
 * 
 * */
add_action( 'woocommerce_after_checkout_validation' , 'ns_restict_registration_for_some_products', 10, 2 );
function ns_restict_registration_for_some_products( $data, $errors ) {
    if( isset( $data['createaccount'] ) && !$data['createaccount'] ) {

        $retricted_ids = get_resticted_product_ids();

        if( isset( $retricted_ids ) && $retricted_ids != null ) {

            $cart_content = WC()->cart->get_cart_contents();

            $cart_ids = wp_list_pluck( $cart_content, 'product_id' );
            $cart_ids = array_values( $cart_ids );
            $common_ids = array_intersect( $retricted_ids, $cart_ids );

            if( isset( $common_ids ) && $common_ids != null ) {
                $errors->add( 'account_registration', __( 'As a member you will need to create an account in order to access important membership information. Please scroll down and check the box "Create an account".', 'text-domain' ) );
            }
        }
    }
}

function get_resticted_product_ids() {
    //specific product ids
    return array(3439);
}