Using UK Payflow. Perhaps someone can advise me. I am running an application (ZenCart) successfully. I have a development version of the same site running on a separate server to work through the issues of php versions. Paypal Express has worked fine on the site for many years. I am in the process of fault-finding the installation on the development site. When I attempt to initiate a connection I receive an "invalid amount" response like this: RESULT=4&RESPMSG=Invalid amount&REQUEST_ID=1570476410&CURL_ERRORS= When I investigate the data that is sent by cURL, it seems that there is a valid amount. In array form, for instance: Array ( [PAYMENTREQUEST_0_AMT] => 0.47 [PAYMENTREQUEST_0_ITEMAMT] => 0.47 [L_PAYMENTREQUEST_0_NUMBER0] => PC-UNTM Can someone advise whether there is some other cause of this response - for instance, either an authentication error or a Payflow error of some type? Also, is there a way of finding further information about the response? Can I contact Paypal and simply ask them why this response was generated? If so how?
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