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Subject:Testing failed
Summary:Can't perform Sandbox testing while providing the API credential
Messages:1
Author:veeraj
Date:2015-11-02 07:23:00
 

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Picture of veeraj veeraj - 2015-11-02 07:23:00
It shows "Security header is not valid" while doing the sand box testing.. please help.. I am using the paypal pro hosted method.