fix for document type

Author: engcom-Charlie

app/code/Magento/Dhl/Model/Carrier.php

@@ -1776,7 +1776,7 @@ protected function _shipmentDetails($xml, $rawRequest, $originRegion = '')
         $nodeShipmentDetails->addChild('DoorTo', 'DD');
         $nodeShipmentDetails->addChild('DimensionUnit', substr($this->_getDimensionUnit(), 0, 1));
         $contentType = isset($package['params']['container']) ? $package['params']['container'] : '';
-        $packageType = $contentType === self::DHL_CONTENT_TYPE_NON_DOC ? 'CP' : '';
+        $packageType = $contentType === self::DHL_CONTENT_TYPE_NON_DOC ? 'CP' : 'EE';
         $nodeShipmentDetails->addChild('PackageType', $packageType);
         if ($this->isDutiable($rawRequest->getOrigCountryId(), $rawRequest->getDestCountryId())) {
             $nodeShipmentDetails->addChild('IsDutiable', 'Y');