I have created a test accout on first data global gate wayand used their api in my webapplication (C# and .net). but there is a problem that it shows unpredictable behaviour. sometimes it accepted wrong credit card numbers but sometime if I give correct credit card number then it gives transcation declined due to invalid credit card.I tried eyerything but there is no effect.please help me.
I am using 1909460160.pem file,'Linkpointtransaction.dll' and lpssl.dll.It works fine sometime but sometime it gives error weather I passed correct or incorrect value.
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user644194
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Could you be a little more specific about what have you tried? – Darin Dimitrov Sep 08 '11 at 18:04
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1honestly , I've worked with first data global, cybersource, worldpay, and authorize. I had similar problems when dealing with first data. Authorize is the best in terms of API and documentation. – Francis Yaconiello Sep 08 '11 at 18:06
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Authorize is the best in terms of API and documentation means pls clear it. – user644194 Sep 08 '11 at 18:16
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Have you tried their web API instead of the .NET API? The web API uses SOAP requests and was a bit easier to integrate in once I got everything setup that is. As far as unpredictable results, I haven't experienced that problem on either API.
Mike Wills
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