error:400 Bad Request Unfortunately we could not process your transaction. There was a problem with: No payment data received

Question

I used payfast as my payment gateway in my website, if am testing payfast on their test engine it works fine when I post values to their engine, but when am using their engine that is not for testing it gives me that error saying "No payment data received"there is an error message I get

Answer 1

I had the same error as well, turns out I was just leaving out the www as Daniel_ZA pointed out.

<form action="https://www.payfast.co.za/eng/process" method="POST"></form>