iceireland Posted October 4, 2013 Share Posted October 4, 2013 hello my question is, what I do and I have a shop paypal payment. the ustaiweniu and install your module configuration and how he wants to pay for the goods out my error: Please try to contact the merchant: PayPal response: TIMESTAMP -> 2013-10-04T08: 36:27 Z L_ERRORCODE0 -> 10002 L_SHORTMESSAGE0 -> Security error L_LONGMESSAGE0 -> Security header is not valid L_SEVERITYCODE0 -> Error Are you can you help me with this mistake The store is in the Prestashop 1.5.4.1 Paypal module thanks and best regards Link to comment Share on other sites More sharing options...
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