bhavikakbari3012 Posted May 23, 2019 Share Posted May 23, 2019 it is working completely fine with sandbox credential.. but getting error 'security header is not valid' with live credentials. Link to comment Share on other sites More sharing options...
MrPhil Posted May 25, 2019 Share Posted May 25, 2019 You may want to read around on the trials and tribulations of PayPal, and the latest updates. What version of osCommerce are you on? If it's not "Frozen" or "Edge", you're wasting your time trying to patch up an ancient official version. Link to comment Share on other sites More sharing options...
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