title: How to test Failed/Denied transactions in paypal sandbox
body: <p>I am performing tests in SANDBOX.</p>
  
  <p>I am implementing Website Payment Standard on my website. </p>
  
  <p>I have tested successfully Completed transactions (payment_status Completed) .
  I need to test Failed and Denied transactions but I am not able to do it.</p>
  
  <p>If there is a test card for Failed or Denied transactions in Sandbox, please provide. </p>
  
  <p>I tried with an invalid credit card to create a Failed or Denied transaction and  I got an error that appeared on the same page (I imagine that was a result of Javascript validation)  but I did not receive any reply to my IPN listener on the server and there should have been a redirection to an URL specified in the HML form as URL for invalid operations. </p>
  
  <p>I understand that a result of each transaction independently of its payment status should be received by my IPN listener. It receives Completed transactions so I imagine it should received Failed or Denied ones too. </p>
  
  <p>I used IPN simulator (developer.paypal.com) to create Failed/Denied transactions and I did receive them with my IPN listener so I imagine it is not a problem with the listener. I just cannot create these transactions from my page directly.</p>
  
  <p>Thanks and best regards, 
  Anna </p>