Fortnox - Itemname Override

functions.php

<?php
/**
 * @snippet       WooCommerce - Use item name from WooCommerce
 * @author        Redlight Media AB / Christopher Hedqvist
 * @compatible    WooCommerce 6.0.0
 */
function redlight_fortnox_order_item_name( $orderItem, $item, $product_id, $order ) {
  $orderItem['Description'] = $item->get_name();
  return $orderItem;
}
add_filter('obj_fortnox_order_item_row_data', 'redlight_fortnox_order_item_name', 10, 4 );