# Payment Gateways

Use payment gateways to pass authorization, payments, and settlement data securely to and from the merchant's website to the merchant's processor. 

For more information about payment gateways, see <a href="https://knowledgecenter.zuora.com/Billing/Billing_and_Payments/M_Payment_Gateways" target="_blank">Payment Gateways</a>.


## List all payment gateways

 - [GET /v1/paymentgateways](https://developer.zuora.com/v1-api-reference/api/payment-gateways/get_paymentgateways.md): Retrieves the basic information about all the payment gateways.

## Trigger a pre-debit notification

 - [POST /v1/payment-gateways/pre-debit-notification](https://developer.zuora.com/v1-api-reference/api/payment-gateways/triggerpredebitnotification.md): To support processing recurring UPI payments through Adyen Integration v2.0, 
a pre-debit notification for each posted invoice must be sent to the UPI users 
before collecting the recurring payments. Use this operation to send pre-debit notification requests 
to the gateway for invoices that meet the requirements. 
See Implement UPI on Adyen Integration v2.0 for more information.

Before using this operation, ensure the following prerequisites are met:
  - Support for UPI transactions on Adyen has been enabled. This is a feature that can be requested through the Specialized Payment Connections service at an additional cost.
  - Ensure the conditions for triggering pre-debit notification requests are met.