@bakenda

It would be easier for you to use their REST service, it is a lot easier than SOAP.

Here's a sample request

Sample Request (JSON)
GET Http://testwebpay.interswitchng.com/test_paydirect/api/v1/gettransaction.json?productid=21&transactionreference=8421941122&amount=300000 HTTP/1.1
UserAgent: Mozilla/4.0 (compatible; MSIE 6.0; MS Web Services Client Protocol 4.0.30319.239)
Hash: F6FF2E22F99D93DDDA52D71811FD92B3A71FA1968A66216E0D310DAD


Sample Response (JSON)[/font]
HTTP/1.0 200 OK
Date: Tue, 30 Oct 2012 16:12:17 GMT
Content-Type: application/json; charset=utf-8
Content-Length: 333

{"Amount":300000,"CardNumber":"6055","MerchantReference":"8421941122","PaymentReference":"ZIB|WEB|VNA|15-10-2012|015933", "RetrievalReferenceNumber":"000000538268", "LeadBankCbnCode":null, "LeadBankName":null, "SplitAccounts":[],"TransactionDate":"2012-10-15T11:07:54.547","ResponseCode":"00","ResponseDescription":"Approved Successful"}


Sample Request (XML)[font=Lucida Sans Unicode]
GET Http://testwebpay.interswitchng.com/test_paydirect/api/v1/gettransaction.xml?productid=21&transactionreference=8421941122&amount=300000 HTTP/1.1
UserAgent: Mozilla/4.0 (compatible; MSIE 6.0; MS Web Services Client Protocol 4.0.30319.239)
Hash: F6FF2E22F99D93DDDA52D71811FD92B3A71FA1968A66216E0D310DAD

Sample Response (XML)[font=Lucida Sans Unicode][/font]
HTTP/1.0 200 OK
Date: Tue, 30 Oct 2012 16:20:56 GMT
Content-Type: application/xml; charset=utf-8
Content-Length: 552

<TransactionQueryResponse xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><ResponseCode>00</ResponseCode><ResponseDescription>Approved Successful</ResponseDescription><Amount>300000</Amount><CardNumber>6055</CardNumber><MerchantReference>8421941122</MerchantReference><PaymentReference>ZIB|WEB|VNA|15-10-2012|015933</PaymentReference><RetrievalReferenceNumber>000000538268</RetrievalReferenceNumber><SplitAccounts /><TransactionDate>2012-10-15T11:07:54.547</TransactionDate></TransactionQueryResponse>