I am using PAYPAL API (php) I success calling the setExpressCheckout (after calling this method I got ACK=Success) and therefore get a full link that I can proceed with. After getting the full link (https://www.paypal.com/cgi-bin/webscr?cmd=_flow&SESSION=[SESSION_TOKEN]), the full link represent a page, that includes error. The error: ======== This transaction is invalid. Please return to the recipient's website to complete your transaction using their regular checkout flow. Return to merchant At this time, we are unable to process your request. Please return to and try another option My account is business account. What may be the cause for the problem? Is there any setup I shall check? Thanks 🙂
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