With Google Pay, you can offer customers an effortless payment experience within your app or website, allowing them to use any credit or debit card securely stored in their Google Account.

When customers make purchases within apps or on websites and use Google Pay as the payment method, Google Pay displays a payment interface. Customers can choose their preferred card from the available options and finalize their purchase by confirming the transaction.

Integration setup

To start processing payments via Google Pay, you first need to register your business profile with Google. After completing the required steps, Google will provide you with a unique Google Pay merchant ID, which is essential for production. You will then be able to add the Google Pay button to your checkout page and start requesting your customer’s encrypted payment information.

In order to use Google Pay on the Guide
Enable Google Pay button to give your customers more payment options. Payment Form or via Guide
Accept and manage credit card payments from your customers. Host-to-Host integration, you need to register as a business and verify your domain in Google Pay & Wallet Console.

To integrate with Google

Google will review your application and contact you if they need more details. Once they check and verify the provided details, your integration becomes active.

When you submit a payment data request to the Google API, be sure to include the following parameters:

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'gateway': 'solid'
'gatewayMerchantId': '\<Replace with your public api key\>'

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{
    apiVersion: 2,
    apiVersionMinor: 0,
    allowedPaymentMethods: [{
        type: 'CARD',
        parameters: {
            allowedAuthMethods: ['PAN_ONLY', 'CRYPTOGRAM_3DS'],
            allowedCardNetworks: ['AMEX', 'DISCOVER', 'MASTERCARD', 'VISA']
        },
        tokenizationSpecification: {
            type: 'PAYMENT_GATEWAY',
            parameters: {
                'gateway': 'solid',
                'gatewayMerchantId': ''
            }
        }
    }]
}

After integrating Google Pay into your payment system, the next step is to test the integration to ensure that it works correctly.

You can use the Google Pay API Sandbox to test your integration and simulate transactions without incurring any actual charges. You can also use test cards provided by Google to test different scenarios, such as successful and failed transactions.

Handling integration errors

There might be errors when you submit a request or get a response for a Google Pay payment. If you encounter an error, depending on its nature:

• Verify if all parameters are added when connecting Google Pay as a payment method.
  • Include all required fields from the Solidgate Google Pay API
  • Ensure that paymentIntent contains the required parameters
• For Guide
  Accept and manage credit card payments from your customers. Host-to-Host integration, confirm the gatewayMerchantId parameter sent to Google contains the relevant API public key.
• In case of the Guide
  Processing error. Verify the merchant’s settings and configurations. 5.04 error, verify your Guide
  Learn to authenticate API requests and fix validation errors effectively. API keys by navigating to HUB > Developers > Channels.

You can test the Google Pay payments when setting up the integration. If the outlined steps do not resolve the issue, please contact the Solidgate support team for further assistance. When contacting, share the details of the issue and the steps you have taken to resolve it.

3DS authentication

There are two card authentication methods for Google Pay:

Solidgate forces all Google Pay transactions using the PAN_ONLY data type to 3D Secure. There is no need to send additional parameters. Applying 3D Secure enables liability shift and minimizes payment risks for PAN_ONLY transactions. The payment processing flow is the following: