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Clearpay Drop-in integration

Add Clearpay to an your existing iOS Drop-in integration.

Our iOS Drop-in renders Clearpay in your payment form, and redirects the shopper to Clearpay to complete the payment.

When making an Clearpay payment, you also need to:

  1. Collect shopper details, and specify these in your payment request. Clearpay uses these for risk checks.
  2. Provide information about the purchased items in your payment request.
  3. Handle the redirect result when the shopper returns to your website.

Before you begin

This page explains how to add Clearpay to your existing iOS Drop-in integration. The iOS Drop-in integration works the same way for all payment methods. If you haven't done this integration yet, refer to our Drop-in integration guide.

Before starting your Clearpay integration:

  1. Make sure that you have set up your back end implementation, and added Drop-in to your payment form.
  2. Add Clearpay in your test Customer Area.

Show Clearpay in your payment form

Drop-in uses the countryCode and the amount.currency from your /paymentMethods request to show the available payment methods to your shopper.

To show Clearpay in your payment form, specify the following combination in your /paymentMethods request:

Country countryCode amount.currency
United Kingdom GB GBP

Make a payment

When the shopper proceeds to pay, Drop-in invokes the didSubmit method which contains data.paymentMethod.

  1. Pass data.paymentMethod to your server.
  2. From your server, make a /payments request, specifying:

    • paymentMethod: The data.paymentMethod from the didSubmit method from your client app.
curl https://checkout-test.adyen.com/v66/payments \
-H "x-API-key: YOUR_X-API-KEY" \
-H "content-type: application/json" \
-d '{
  "{hint:`data.paymentMethod` from `didSubmit`}paymentMethod{/hint}":{
    "type":"clearpay"
  },
  "amount":{
     "value":1000,
     "currency":"GBP"
  },
  "shopperName":{
     "firstName":"Simon",
     "lastName":"Hopper"
  },
  "shopperEmail":"s.hopper@example.com",
  "shopperReference":"YOUR_UNIQUE_SHOPPER_ID",
  "reference":"YOUR_ORDER_REFERENCE",
  "merchantAccount":"YOUR_MERCHANT_ACCOUNT",
  "returnUrl":"my-app://",
  "countryCode":"GB",
  "telephoneNumber":"+44 203 936 4029",
  "billingAddress":{
     "city":"London",
     "country":"GB",
     "houseNumberOrName":"8-10",
     "postalCode":"SW1H 0BG",
     "stateOrProvince":"Westminster",
     "street":"Broadway"
  },
  "deliveryAddress":{
     "city":"London",
     "country":"GB",
     "houseNumberOrName":"8-10",
     "postalCode":"SW1H 0BG",
     "stateOrProvince":"Westminster",
     "street":"Broadway"
  },
  "lineItems":[
     {
        "description":"Shoes",
        "quantity":"1",
        "amountIncludingTax":"400",
        "amountExcludingTax": "331",
        "taxAmount": "69",
        "id":"Item #1"
     },
     {
        "description":"Socks",
        "quantity":"2",
        "amountIncludingTax":"300",
        "amountExcludingTax": "248",
        "taxAmount": "52",
        "id":"Item #2"
     }
  ]
}'

The /payments response contains:

  • action.method: GET. The HTTP request method that you should use. After the shopper completes the payment, they will be redirected back to your returnURL using the same method.

/payments response
{
   "resultCode":"RedirectShopper",
   "action":{
      "method":"GET",
      "paymentData":"Ab02b4c0!BQABAgCSZT7t...",
      "paymentMethodType":"clearpay",
      "type":"redirect",
      "url":"https://checkoutshopper-test.adyen.com/checkoutshopper/checkoutPaymentRedirect?redirectData=..."
   },
   "details":[
      {
        "key":"redirectResult",
        "type":"text"
      }
   ],
   ...
}
  1. Pass the action object to your client app. Drop-in needs this to redirect the shopper to Clearpay.

Handle the redirect result

Drop-in redirects the shopper to Clearpay to complete the payment.  

  1. To inform Drop-in when the shopper returns to your app, implement the following in your UIApplicationDelegate:
    func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey: Any] = [:]) -> Bool {
       RedirectComponent.applicationDidOpen(from: url)
    
       return true
    }
    After Drop-in completes the action, it invokes the didProvide method.
  2. From your server, make a POST /payments/details request providing the data from the didProvide method from your client app.
    /payments/details request
    {
       "{hint:data.paymentData from didProvide}paymentData{/hint}":"Ab02b4c0!BQABAgCJN1wRZuGJmq8dMncmypvknj9s7l5Tj...",
       "{hint:data.details from didProvide}details{/hint}":{
         "redirectResult":"X6XtfGC3!Y..."
       }
    }
    You receive a response containing:
    • resultCode: Use this to present the result to your shopper.
    • pspReference: Our unique identifier for the transaction.
    /payments/details response
    {
       "resultCode": "Authorised",
       "pspReference": "88154795347618C"
    }

Present the payment result

Use the resultCode that you received in the /payments/details response to present the payment result to your shopper.
The resultCode values you can receive for Clearpay are:

resultCode Description Action to take
Authorised The payment was successful. Inform the shopper that the payment was successful.
Cancelled The shopper cancelled the payment. Ask the shopper whether they want to continue with the order, or ask them to select a different payment method.
Pending or
Received
The shopper has completed the payment but the final result is not yet known. It may take minutes or hours to confirm this. Inform the shopper that you've received their order, and are waiting for the payment to be completed.
To know the final result of the payment, wait for the AUTHORISATION notification.
Refused The payment was refused by Clearpay. Ask the shopper to try the payment again using a different payment method.

If the shopper failed to return to your website or app, wait for notification webhooks to know the outcome of the payment:

eventCode success field Description Action to take
AUTHORISATION false The transaction failed. Cancel the order and inform the shopper that the payment failed.
AUTHORISATION true The shopper successfully completed the payment. Inform the shopper that the payment has been successful and proceed with the order.

Capture the payment

By default, all Clearpay payments are captured automatically after authorisation.
If you prefer to capture the payment after the goods have been sent, or when you want to partially capture payments, you need to set up a capture delay or use manual capture. When you use manual capture, Clearpay payments have to be captured within 13 days after authorisation.
Capturing the payment is what triggers the invoice to be sent to the shopper.

Partial captures

To partially capture an Clearpay payment, specify in your /capture request:

  • modificationAmount: The amount that the shopper should pay. 
  • additionalData.openinvoicedata: Optional Price and product information for the items that the shopper should pay for.

Although the field names are different, the information in additionalData.openinvoicedata is the same as what you provided in lineItems when making a /payments request:

openinvoicedata lineItems Description
itemAmount amountExcludingTax The price for one item, without the tax, in minor units.
itemVatAmount taxAmount The tax amount for one item, in minor units.

The following example shows how to make a partial capture request if the shopper only kept one pair of socks from the two included in the original payment request.

/capture request
{
   "originalReference":"COPY_PSP_REFERENCE_FROM_AUTHORISE_RESPONSE",
   "merchantAccount":"YOUR_MERCHANT_ACCOUNT",
   "modificationAmount":{
      "currency":"GBP",
      "value":"700"
   },
   "additionalData":{
      "openinvoicedata.numberOfLines":"2",
      "openinvoicedata.line1.currencyCode":"GBP",
      "openinvoicedata.line1.description":"Shoes",
      "openinvoicedata.line1.itemAmount":"331",
      "openinvoicedata.line1.itemVatAmount":"69",
      "openinvoicedata.line1.numberOfItems":"1",
      "openinvoicedata.line2.currencyCode":"GBP",
      "openinvoicedata.line2.description":"Socks",
      "openinvoicedata.line2.itemAmount":"248",
      "openinvoicedata.line2.itemVatAmount":"52",
      "openinvoicedata.line2.numberOfItems":"1",
   },
   "reference":"YOUR_CAPTURE_REFERENCE"
}

Any unclaimed amount that is left over after partially capturing a payment is automatically cancelled. When your account is enabled for multiple partial captures, the unclaimed amount after an initial capture is not automatically cancelled.

To set up multiple partial captures, contact our Support Team. Multiple partial captures will create a new invoice for each capture. 

Refunds and cancellations

If a payment has not yet been captured, you can cancel it. If the Clearpay payment has already been captured and you want to return the funds to the shopper, you need to refund it.

Partial refunds

To partially refund a payment, specify in your /refund request:

  • modificationAmount: The amount to be refunded to the shopper.
  • additionalData.openinvoicedata: Optional Price and product information about the returned items.

Providing additionalData.openinvoicedata is optional, and although the field names are different, the information is the same as what you provided in lineItems when making a /payments request:

openinvoicedata lineItems Description
itemAmount amountExcludingTax The price for one item, without the tax, in minor units.
itemVatAmount taxAmount The tax amount for one item, in minor units.

The following example shows how to make a partial refund request if the shopper returned the shoes included in the original payment request.

/refund request
{
   "merchantAccount":"YOUR_MERCHANT_ACCOUNT",
   "originalReference":"COPY_PSP_REFERENCE_FROM_AUTHORISE_RESPONSE",
   "modificationAmount":{
      "currency":"EUR",
      "value":"400"
   },
   "additionalData":{
      "openinvoicedata.numberOfLines":"1",
      "openinvoicedata.line1.currencyCode":"GBP",
      "openinvoicedata.line1.description":"Shoes",
      "openinvoicedata.line1.itemAmount":"331",
      "openinvoicedata.line1.itemVatAmount":"69",
      "openinvoicedata.line1.numberOfItems":"1"
   },
   "reference":"YOUR_REFUND_REFERENCE"
}

Discounts

To offer discounts, specify in your /payments request the negative amount to be added to the original price. The following example shows how to specify a discount of 10 GBP on Item 2:

{
  "amount":{
     "value":7850,
     "currency":"GBP"
  },
  ...
  "lineItems":[

     {
        "description":"Test Clearpay 1",
        "quantity":"1",
        "amountIncludingTax":"4550",
        "id":"Item #1"
     },
     {
        "description":"Test Clearpay 2",
        "quantity":"2",
        "amountIncludingTax":"2650",
        "id":"Item #2"
     }

     {
        "description":"Discount",
        "quantity":"2",
        "amountIncludingTax":"-1000",
        "id":"Item #2 Discount"
     }
  ]
}

Test and go live

To test Clearpay payments, you need a test shopper account in the Clearpay sandbox environment.
To create a test account:

  1. Go to https://portal.sandbox.clearpay.co.uk/
  2. Enter a real email address and click Continue. You'll get confirmations of payments and refunds like any other shopper on this email address.
  3. Enter any mobile telephone number that is formatted correctly, and click Continue. Check the input box for hints on the format. The phone number won't be used.
  4. When you are prompted to enter your SMS verification code, enter 111111.
  5. Follow the instructions on your screen to complete your profile, accept the terms and conditions, and click Continue.

To test payments, add a test card to your Clearpay test shopper account.
You can use the card details provided in the Clearpay developer documentation, or use one of the Adyen test cards. Use CVV 000 to simulate authorised payments, or CVV 051 to simulate refused payments.

You can check the status of test payments in your Customer Area > Transactions > Payments.

Before you can accept live Clearpay payments, you need to submit a request for Clearpay in your live Customer Area.

See also