-&nbsp;Log in to your iDEAL account<br />-&nbsp;Click on the <u>'Security'</u> in the <u>'Profile'</u> section.<br />-&nbsp;Set the option <u>'Notification'</u> to <b>'XML'</b><br />-&nbsp;Set the <u>'Notification URL'</u> to:<br /><b>[return_url]</b><br />-&nbsp;Set the <u>'Secret key'</u>. A Secret key is known only to the seller and iDEAL.<b