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POSet Express Checkout method returning an failure in the ack
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  1. POSet Express Checkout method returning an failure in the ack
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    copied!<p>I want to do the express checkout process in the paypal for the customers without redirecting the browser. I have written the code like</p> <pre><code> string sAPIUser = apiuser; string sAPIPassword = password; string sAPISignature = "signature"; string sAPIEndpoint = "https://api-3t.sandbox.paypal.com/nvp"; string sAppID = "APP-80W284485P519543T"; StringBuilder sRequest = new StringBuilder(); ASCIIEncoding encoding = new ASCIIEncoding(); string postData = ("&amp;METHOD=SetExpressCheckout"); postData += ("&amp;VERSION=63.0"); postData += ("&amp;PAYMENTREQUEST_0_AMT=10.00"); postData += ("&amp;PAYMENTREQUEST_0_CURRENCYCODE=USD"); postData += ("&amp;PAYMENTREQUEST_0_PAYMENTACTION=Sale"); postData += ("CANCELURL=http://www.google.com"); postData += ("RETURNURL=http://www.google.com"); byte[] data = encoding.GetBytes(postData); </code></pre> <p>// Prepare web request...</p> <pre><code> HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(sAPIEndpoint); myRequest.Method = "POST"; myRequest.Headers.Add("X-PAYPAL-SECURITY-USERID", sAPIUser); myRequest.Headers.Add("X-PAYPAL-SECURITY-PASSWORD", sAPIPassword); myRequest.Headers.Add("X-PAYPAL-SECURITY-SIGNATURE", sAPISignature); myRequest.Headers.Add("X-PAYPAL-SERVICE-VERSION", "1.3.0"); myRequest.Headers.Add("X-PAYPAL-REQUEST-DATA-FORMAT", "NV"); myRequest.Headers.Add("X-PAYPAL-RESPONSE-DATA-FORMAT", "NV"); myRequest.Headers.Add("X-PAYPAL-APPLICATION-ID", sAppID); myRequest.ContentType = "application/x-www-form-urlencoded"; myRequest.ContentLength = data.Length; // Send the request, read the response Stream newStream = myRequest.GetRequestStream(); newStream.Write(data, 0, data.Length); newStream.Close(); HttpWebResponse response = (HttpWebResponse)myRequest.GetResponse(); Stream responseStream = response.GetResponseStream(); Encoding encoding2 = Encoding.GetEncoding("utf-8"); StreamReader reader = new StreamReader(responseStream, encoding2); string theResponse = reader.ReadToEnd(); theResponse = HttpUtility.HtmlDecode(theResponse); </code></pre> <p>But i am getting the failure message in the <code>theResponse</code> variable. What error i am doing. The error is like</p> <pre><code> TIMESTAMP=2013%2d03%2d05T05%3a55%3a38Z&amp;CORRELATIONID=5c10035aca937&amp;ACK=Failure&amp;VERSION=63%2e0&amp;BUILD=5331358&amp;L_ERRORCODE0=10002&amp;L_SHORTMESSAGE0=Authentication%2fAuthorization%20Failed&amp;L_LONGMESSAGE0=You%20do%20not%20have%20permissions%20to%20make%20this%20API%20call&amp;L_SEVERITYCODE0=Error </code></pre> <p>How can i rectify this.</p>
 

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