leathernecksswflcom 0 Posted December 19, 2011 I just installed pay pal, and am trying it out in the sandbox. After entering all card info and submitting a get " security header invalid". What is this and how do i correct? Share this post Link to post Share on other sites
BryceJr 20 Posted December 20, 2011 (edited) You are porbably using "LIVE" keys and cerificates on a "SANDBOX" or test mode. Paypal sandbox behaves like a live transaction server except it uses fake accounts. Transactions are contained within the "sandbox". Once everything is set up correctly and working fine, then, you can switch it to LIVE. Did you set up a sandbox account? Also, read the "Sandbox" user guide. You can sign up for a sandbox account at https://developer.paypal.com Sandbox user guide >> https://developer.paypal.com/en_US/pdf/PP_S...x_UserGuide.pdf Edited December 20, 2011 by BryceJr Share this post Link to post Share on other sites
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