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Online payments

PayPal payments

Last updated: 18-Apr-2022
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Overview

Checkout can be used to accept PayPal payments.

This guide requires familiarity with Accepting payments.

PayPal processing fields

  • customer - ID of a Customer created via the Customer API. A customer object can be created and attached to a Checkout. The customer object can store relevant customer details. Read all of the customer requirements needed for PayPal transactions.
  • line_items - Shopping cart line items to be displayed on the page and sent to PayPal 
  • configurations.paypal - Object carrying the parameters required for making an Google Pay payment (Required)
    • payment_contract_id - This ID can be found in the portal or given to you by a Verifone employee. It is used to retrieve merchant's PayPal credentials necessary for a payment. (Required)
    • dynamic_descriptor - Short text to be displayed on the bank statement of the cardholder. Support varies per Payment Contract.
    • capture_now - Used for separate authorization and capture
    • invoice_number - PayPal invoice number
    • application_context - Additional merchant options to control the appearance of PayPal's landing page
    • description - Description of the payment shown to the shopper on the PayPal screen

 

Authorization and capture

PayPal transactions through the Checkout can be used to do a sale (capture_now = true) or to authorize without capturing immediately (capture_now = false). An authorized payment reserves the money and allows you to capture the funds at a later stage.

Handling responses

Whenever a card payment is processed via the Checkout, the responses events would contain additional fields specific to card payments in the details object.

Example of successful checkout via the Checkout:

[
    {
        "type": "TRANSACTION_INITIATED",
        "id": "b5b5fa07-3c99-4613-92f7-e24c258b3269",
        "timestamp": "2021-03-31T11:43:46.697Z",
        "details": {
            "id": "fd31890c-8c45-4846-a934-a7faa584e823",
            "orderId": "71110696K0011224V",
            "createdAt": "2021-03-31T11:43:45Z",
            "status": "INITIATED",
            "approvalUrl": "https://www.sandbox.paypal.com/checkoutnow?token=71110696K0011224V"
        }
    },
    {
        "type": "TRANSACTION_SUCCESS",
        "id": "1aaebd63-2daf-4753-bc32-bcdb8c35b743",
        "timestamp": "2021-03-31T11:44:07.717Z",
        "details": {
            "id": "fd31890c-8c45-4846-a934-a7faa584e823",
            "captureId": "93459848W31137123",
            "createdAt": "2021-03-31T11:44:06Z",
            "isFinalCapture": true,
            "payer": {
                "payerId": "92FT3NN28KELQ",
                "shippingAddress": {
                    "country": "IN",
                    "postalCode": "100047",
                    "countrySubdivision": "Maharashtra",
                    "city": "Mumbai",
                    "addressLine1": "addressLine1",
                    "addressLine2": "addressLine2",
                }
            },
            "status": "AUTHORISED"
        }
    }
]

Example of failed PayPal payment via the Checkout:

[
    
    {
        "type": "TRANSACTION_FAILED",
        "id": "f2041250-4fc2-4b3a-bc94-651ba099541a",
        "timestamp": "2020-07-08T12:42:37.974Z",
        "details": {
              "id": "6d85d047-1e78-4f13-afe2-cc041bce524f",
              "authorizationId": "4PB16132MH590854B",
              "createdAt": "2021-01-06T04:40:30Z",
              "expiresAt": "2021-02-04T04:40:30Z",
              "status": "FAILED",
              "payer": {
                  "payerId": "92FT3NN28KELQ",
                  "shippingAddress": {
                      "country": "IN",
                      "postalCode": "100047",
                      "countrySubdivision": "Maharashtra",
                      "city": "Mumbai",
                      "addressLine1": "addressLine1",
                      "addressLine2": "addressLine2",
                  }
              }
      }
    }
    
  ]

 

  • Note: To ensure that the redirection request was not tampered with, always check that the transaction_id received as query parameter in the redirection matches the transaction_id property of the retrieved Checkout. If those are not matching, this is indication of either an incorrect integration, that the redirection to your return_url did not originate from Verifone, or transaction_id was tampered with.
  • You can now store the transaction_id value together with the order 1234 in your system to link the two together.

Scenarios

The table below describes the different outcomes of a Checkout. A full list error codes are available.

Description Result Merchant action
Failed transaction* Redirect: checkout_id={checkout_id} & transaction_id={transaction_id} & errorCode=123 Unsuccessful payment (technical reason), do not display order confirmation
Successful transaction Redirect: checkout_id={checkout_id} & transaction_id={transaction_id} Display order confirmation
Customer visits the URL of an already completed Checkout Redirect: checkout_id={checkout_id} & errorCode=168 Display corresponding message to customer. Checkout is completed whenever there was a single successful payment processed through it.
Customer visits the URL of an expired Checkout Redirect: checkout_id={checkout_id} & errorCode=169 Display corresponding message to customer. Checkout is expired whenever the expiry_time is reached.
Customer visits the URL of a Checkout which has reached the maximum of failed payment attempts Redirect: checkout_id={checkout_id} & errorCode=165 Display corresponding message to customer. Payments through a single Checkout can be attempted up to three times unsuccessfully.
Form validation errors / Other service failures on the Checkout page Displays error alert to Customer on the page Customer is prompted to correct their form input and retry the payment or try using alternate card or payment method

*** Failed transaction - Depending on which step in the payment process failed, the transaction_id might not always be present as the query parameter

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