I have setup a prestashop site, and have configured the paypal module.
However, when testing the site, I get the following error:
“Please refer to logs:
1. PayPal response:
2. TIMESTAMP -> 2011-09-18T11:17:22Z
3. L_ERRORCODE0 -> 10002
4. L_SHORTMESSAGE0 -> Security error
5. L_LONGMESSAGE0 -> Security header is not valid
6. L_SEVERITYCODE0 -> Error
7. PayPal returned error
Can you please help urgently fix this issue? It would be useful if you have worked on a similar issue before?
