For now the flow looks like this: mobile app performs paypal payment and when it is complete it sends information about transaction to backend API. Then backend API makes request to paypal API and check transaction. What I need is to somehow "mark" transaction to identify it later. Is it possible to send some custom variable/id when making payment (on IOS) and then retrieve it by transaction id?
There's two ways to specify a payment for an order. one is the invoice field and the other is custom. Both will be passed back to you via paypal-ipn or in your request for information about the transaction ID.
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I'm trying to integrate "Paypal smart buttons" in my webpage which was with a deprecated paypal implementation.
On this new integration I'm using server-side SDK and I can create and capture an order and save data in my DB.
The problem I have now is to implement the refund.
On my last implementation I had an IPN Listener and whenever I get a refund I could register it in my BD.
Since now IPN listener is deprecated, how can I implemented the "listener function"? Is the webhooks the new approach to implement the listener? I know that with Webhooks Management API I can list all webhooks events, but then how can I related them with the payment made and registered before in my BD?
I've already read lots of official paypal documentation but this is no clear to me, yet.
Register a webhook listener URL for the events you want, including refunds.
When you receive a refund webhook event at that URL, the body of the webhook will contain information about the capture/payment object (transaction id) that was refunded.
If in addition to the capture/transaction id you need some additional id for reconciliation purposes, there are two pieces of information you can include in the original order creation.
an invoice_id, which is essentially your system's unique order ID. It must be unique, never used before for a successful completed transaction since it is used to block any future duplicate (accidental) payment attempts of the same ID.
a custom_id, which can have any arbitrary value and is not indexed and not visible to the payer.
I'm trying to implement the new PayPal Orders API, here is what I did:
Create a developer account, add an app name and then I have Client Id and Secret.
Use OrderCreateRequest to create an Order
Get approvel_url from the resposne->result->links
Redirect to this approvel_url and finish the payment
Paypal will redirect back to my website.
But I never got any thing from the PayPal testing account,Please, what did I miss?
Edit:
On No.4, when redirects to the PayPal page, somehow it only shows 'Continue' button on the page, not the 'make payment' button.
You are missing:
Display an order review page to the payer.
Capture the order with an API call, which (if successful) will return the transaction ID in the purchase_units[0].payments.captures[0] object.
On success, display a thank you/confirmation page.
Without the final capture API call, there is no PayPal transaction.
You are also still using an old integration method based on redirects, which is for old websites. Current PayPal Checkout integrations use no redirects. At all.
Instead of redirecting, make two routes on your server, one for 'Create Order' and one for 'Capture Order', documented here. These routes should return only JSON data (no HTML or text). When a capture response is successful, store its resulting payment details in your database (particularly purchase_units[0].payments.captures[0].id, the PayPal transaction ID) and perform any necessary business logic (such as sending confirmation emails or reserving product) right before sending your return JSON.
Pair those two routes with the following approval flow: https://developer.paypal.com/demo/checkout/#/pattern/server
I'm integrating my application with PayPal and i found a problem.
I use PayPal REST API with intent: "CAPTURE".
After I create an order in paypal via /v2/checkout/orders POST endpoint and client pay for this order in https://www.sandbox.paypal.com/checkoutnow?token={TOKEN} website I don't receive any money or transaction on my PayPal business account.
When I check this order status it says that it is APPROVED but not COMPLETED, so i need to capture this order via v2/checkout/orders/{TOKEN}/capture POST endpoint. After capturing this order is has status: COMPLETED and i receive money.
Is It possible to automatically capture an order without any additional request to capture it?
Because when I use PayPal button It works automatically and I want to have the same result using REST API.
No, it's not possible. The capture step is required.
Whether you use a client-side integration: https://developer.paypal.com/demo/checkout/#/pattern/client
Or a front-end UI that calls server-side routes of yours: https://developer.paypal.com/demo/checkout/#/pattern/server
The capture step after approval (within onApprove) is always required.
My application uses PayPal java library to make payments. Everything works fine but I can't understand one thing. What exactly is transaction code? Let's say I make a payment and then approve it. As a result I receive the JSON object which has an ID (PAY-*) and transactions->related resources->sale->ID. Both of them I store in the DB in order to show later to user (in case he wants to refund the money). But if I see these payments from PayPal customer portal, in the descriptions of payment I see non of these ID's.. Transaction code is totally different! So which one of them should I store?
Thank you in advance
PayPal generally uses a transaction ID. It's a 16 character alphanumeric string. This will appear in both your API response and the PayPal site. Assuming REST is like Classic, the Transaction ID is how you will reference the payment for any future operations (capture, refund, etc).
Please note that if you're using Express Checkout (where the customer pays via PayPal account) they will have their own transaction ID for the exact same transaction.
I have been working paypal integration to an existing system of ours and successfully done tests on sandbox by using rest api and express checkouts.
Although documentation is detailed, I couldnt see anything about chargeback (i.e reverse transactions) and cancellations on rest api documentation page http://developer.paypal.com/docs/api/
So in case a user buys something successfully and the payment status becomes "completed", then there is a reverse transaction like chargeback, paypal will send a request to the return and cancel urls which are predefined while creating the related payment, or the client application has to check the payment statuses manually by rest calls? Or are there any other configs that I need to send while triggering the very first payment request?
You'll need to setup Instant Payment Notification (IPN) to handle that sort of thing.
IPN will automatically POST data about all transactions that hit your PayPal account to a URL you specify. This URL (a script) can receive the data and update your database, generate email notifications, or anything else you might want to automate based on the transactions.
You can handle all sorts of things with IPN. For chargebacks specifically, you would receive an IPN with the following params...
txn_type=new_case
case_type=chargeback
Of course, you'll get a bunch more parameters, too, but those would be how you can pick out the chargebacks and processing them accordingly.