PayPal：客人付款不一致

Question

I am developing Express checkout with Merchant-SDK for classic API and I am experiencing some problems with guest paymens.

I have checked the PayPal Account Optional and I am manualy setting the SOLUTIONTYPE=Sole during setExpresCheckout.

However I am getting very inconsistent results (at some point I was able to use guest payment with PayPal Account Optional alone). Guest payment seems to work for only some states but they seem not to be always the same.

So I am wondering What else affects this? Where can I find some explanation?

Note: I am using shortened flow (useraction=commit) and setting the LOCALCODE . Right now I am also setting the LANDINGPAGE=Billing but It would be better for me to leave this on PayPal.

Answer 1

As for integration level, PayPal Account Optional (set as 'on') and SOLUTIONTYPE=Sole are the only 2 steps for you to configure. Nothing else you should do. Such guest checkout issue for Express Checkout is mainly based on customer/buyer side, including the network environment, funding source status, etc., PayPal has its own risk detection mechanism to judge whether or not your customer is suitable for guest checkout. This risk detection mechanism is very complicated to find its rule. But if your PayPal account is based on US, you can go to the link below to upgrade your PayPal account to the Pro account, and then you can integrate PayPal Direct Payment which can fully use guest checkout. https://www.paypal-business.com/paypal-pro