zentao/extension/ipd/api/ext/lang/en/clientapi.php

<?php
$lang->api->failLogin    = 'Timeout. Please login again!';
$lang->api->failNoFind   = 'No records!';
$lang->api->failDeleted  = 'It has been deleted.';
$lang->api->failComment  = 'The comment should not be empty.';