FAIL Error: 4011

Question

This is my form:

<form method=post action="https://www.paypal.com/cgi-bin/webscr">
     <input type="hidden" name="cmd" value="_notify-synch">
     <input type="hidden" name="tx" value="<?php echo $_GET['tx']; ?>">
     <input type="hidden" name="at" value="52522320223225333633365254541">
     <input type="submit" value="PDT"> 
</form>

When i submit the above form the fail will occur.

I'm getting similar error. Were you able to find solution to this? — parpar, Jan 22 '18 at 08:43

score 3 · Answer 1 · edited May 23 '17 at 12:31

3

This error was cause by using SandBox credentials, while redirecting to non-sandbox URL.

PayPal Express returns 4011 error message in Sandbox mode

edited May 23 '17 at 12:31

Community

1
1

answered Apr 27 '16 at 08:06

kejsu

384
2
5

here u can see i m posting the form to same url but diffrent params, https://www.sandbox.paypal.com/cgi-bin/webscr – Lalit Mohan Apr 27 '16 at 08:14
please check [here](http://stackoverflow.com/questions/36887028/create-paypal-sandbox-merchant-seller-account) – fresher Apr 27 '16 at 10:42

FAIL Error: 4011

1 Answers1