[-] BO : #PSCFV-2739 - Hide button merchandise return if disable

controllers/admin/AdminOrdersController.php

@@ -195,6 +195,8 @@ class AdminOrdersControllerCore extends AdminController
 					'desc' => $this->l('Add a product'),
 					'class' => 'add_product'
 				);
+
+			if (Configuration::get('PS_ORDER_RETURN'))
 				$this->toolbar_btn['standard_refund'] = array(
 					'short' => 'Create',
 					'href' => '',