在应用程序中记录贝宝付款

Question

I have several ambiguities in using paypal methods and cases, when IPN messages are sent. Im developing app, in which im using paypal(sandbox) for making deposits and cashouts. Each of these both transactions I want to log in my app and here some obscurity raises becouse I need to capture as many cases that may occur. So I'll take it gradually and I'll be thankful also for each partial response.

Firstly, I have some general questions:

In my app, im using BuyNow button , AdaptivePayment methods PAY and PaymentDetails and Merchant method GetTransactionDetails . Are these methods part of Bussines account and for free (there are no monthly fees) right? I cant afford to pay some monthly fees from begining.

May arise any problems, when i'll deploy it to non-sanbox environment?

cashout

For cashout Im using Adaptive payment PAY method.

1. When My app client make a cashout to his/her paypal account, I can catch through IPN message, that payment is completed and using AdaptivePayment PaymentDetails method and Merchant GetTransactionDetails method I can find out, that there is pending status with paymentreview reason. So on receiver side, where I dont have access, is payment review possibility. Thus receiver can DENY payment and here is a question, how to get information about this user action, becouse an IPN message doesn't come.

2. Another case that im facing is when client of my app make cashout to his/her bussines paypal account with different currency from sender (my bussines paypal account). There is pending status too, but with reason "multicurrency" in IPN message. Here is similar problem to previous point 1)... again, I cant get IPN message, which determine, if user accepted or not the transacion.

deposit

For deposit Im using PayPal standard Buy now button.

1. PAYER SIDE(my app client): I dont understand, why there is payment review (accept/deny) in payer account profile, when status of payment is completed? Is it common behavior only in sandbox environment? Or is it possible accept/deny payment on payer side in non-sandbox?

2. RECEIVER SIDE(my bussines paypal account): There is payment review too, on receiver side, and if im right, these links (accept/deny) are similar to links on payer side, arent? There is refund posibility too, exists some API method to refund programatically?

Answer 1

Correct, each of the products you mentioned do not have a monthly fee.

If a user accepts or denies a pending payment that would trigger another IPN with the completed status. Are you saying you've tested this specifically and you're seeing otherwise?

Receivers would only have to accept/deny in cases where there is currency conversion or maybe they have fraud filters set to flag specific transactions, etc. In most cases there should be no review necessary.