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osCommerce

The e-commerce.

strupat

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Everything posted by strupat

  1. The "live" PayPal system and the "sandbox" PayPal System seem to have two different, not-interchangeable API certificates. When using the sandbox endpoint one needs to have the sandbox API certificate, obtained from sandbox.paypal.com and/or developer.paypal.com. When using the real or "live" endpoint one needs to have the real API certificate, obtained from www.paypal.com. After changing to the proper API certificate the "Security header is not valid (10002)" error message did not re-occur and the problem was solved.
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