realex showing Mandatory Fields missing: [/request/sha1hash]. error message - php

Question

This is full source code i am using with DCC where I replace merchantid and account with actual values
$merchantid = "merchantid"; $secret = "secret"; $account = 'account';
This is how i am creating hash
$tmp = "$timestamp.$merchantid.$orderid.$amountinCents.$currency.$cardnumber";
$md5hash = md5($tmp);
$tmp = "$md5hash.$secret";
$md5hash = md5($tmp);
below is the xml sending code
$xml = "<request type='auth' timestamp='$timestamp'>
<merchantid>$merchantid</merchantid>
<account>$account</account>
<orderid>$orderid</orderid>
<amount currency='$currency'>$amountinCents</amount>
<DCC_ENABLE>1</DCC_ENABLE>
<card>
<number>$cardnumber</number>
<expdate>$expdate</expdate>
<type>$cardtype</type>
<chname>$cardname</chname>
<cvn>
<number>$cvvno</number>
<presind>1</presind>
</cvn>
</card>
<dccinfo>
<ccp>euroconex</ccp>
<type>1</type>
<ratetype>S</ratetype>
<amount currency='$currency'>$amountinCents</amount>
</dccinfo>
<autosettle flag='1'/>
<md5hash>$md5hash</md5hash>
<tssinfo>
<address type=\"billing\">
<country>ie</country>
</address>
</tssinfo>
</request>";
// Send the request array to Realex Payments
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://api.sandbox.realexpayments.com/epage-remote.cgi");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_USERAGENT, "payandshop.com php version 0.9");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); //This should always be set to 'TRUE' when in production to ensure the SSL is enabled.
$response = curl_exec ($ch);
curl_close ($ch);
$parseXML = simplexml_load_string($response);
echo "<pre>";print_r($parseXML);die();
it return me "320 An internal error has occured." message
i am not sure what i am doing wrong I want to add DCC facility.

Answer 1

Thanks for your question. Firstly, I would highly recommend you use the SHA1 algorithm to hash the transaction details instead of MD5.
Secondly, you didn't post your request XML but it must adhere to the following format:
<?xml version='1.0' encoding='UTF-8'?>
<request type='auth' timestamp='20171025141809'>
<merchantid>Merchant ID</merchantid>
<account>internet</account>
<channel>ECOM</channel>
<orderid>N6qsk4kYRZihmPrTXWYS6g</orderid>
<amount currency='EUR'>1001</amount>
<card>
<number>4263970000005262</number>
<expdate>0519</expdate>
<chname>James Mason</chname>
<type>VISA</type>
<cvn>
<number>123</number>
<presind>1</presind>
</cvn>
</card>
<autosettle flag='1'/>
<comments>
<comment id='1'>Mobile Channel</comment>
<comment id='2'>Down Payment</comment>
</comments>
<sha1hash>87707637a34ba651b6185718c863abc64b673f20</sha1hash>
</request>
Can you please ensure that you have the sha1hash element in the request XML and that it is being populated with the appropriate value.
Best,
Seán
Realex Payments