title: Vauge PayFlow Error
body: <p>I'm using PayFlow with Layout C, which uses an iFrame to embed the payment form. I've followed the instructions found here for testing: <a href="https://developer.paypal.com/docs/classic/payflow/gs_ppa_hosted_pages/" rel="nofollow">https://developer.paypal.com/docs/classic/payflow/gs_ppa_hosted_pages/</a></p>
  
  <p>My request for a secure token returns successfully, but when I run a test charge, I get the following error:</p>
  
  <blockquote>
    <p>Some required information is missing or incorrect. Please correct the
    fields below and try again.</p>
    
    <p>Error: An error has occurred. Please contact the system administrator.</p>
  </blockquote>
  
  <p>The only fields below are card number and expiration date, which follow the testing guidelines.</p>
  
  <p>What else could be going wrong?</p>