Configure your WorldPay account before using the payment.<br /><br />Go to the WorldPay administration page and switch to the Installation section.<br /><br />Fill the fields as follows:<br /><br />Payment Response URL: <b>[return_url]</b><br />Payment Response Password: <b>Make up a secret word.</b> The same word must be entered in the respective field below<br />MD5 secret for transactions: <b>Make up a secret word.</b> The same word must be entered in the respective field below<br />SignatureFields: <b>instId:amount:currency:cartId</b>