PDT is ON, IPN is ON I have a form to create subscription with _xclick-subscriptions and "return_url" After User paid successfully he is redirecting to url "return_url", but on backend I detect this url is calling 2 times with the same query string values (tx, st, amt,...). On backend I validate transaction using Identity Token, but because I received 2 request then I save the same payment 2 times Requests are calling in the same time, so I cannot detect registered records in my DB
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