Can someone tell me what is going on with this, I think I have my PayPal module configured correctly?
Thanks in advance
This could be a couple of things.
First, if you're trying to test in sandbox, make sure you're using sandbox API credentials rather than live ones. More info here: http://magento.stackexchange.com/questions/14177/paypal-express-10002-security-header-is-not-valid-e...
If that still doesn't work, you might need to try the steps listed as a solution in this post: http://magento.stackexchange.com/questions/14177/paypal-express-10002-security-header-is-not-valid-e...
