On your shipping fail page, add this to the body:
<?php
echo "<p>USPS: <br />";
echo "Full Request: ".(isset($_SESSION["saleCo_USPS_FullRequest"])?htmlentities($_SESSION["saleCo_USPS_FullRequest"]):"n/a")."<br />";
echo "Full Response: ".(isset($_SESSION["saleCo_USPS_FullResponse"])?htmlentities($_SESSION["saleCo_USPS_FullResponse"]):"n/a")."<br /></p>";
?>
Post back with what is shown on the page, but make sure to obscure any sensistive information like your shipping credentials.


