---
title: "Modify payments"
description: "Learn how to capture, cancel, or refund a payment."
url: "https://docs.adyen.com/online-payments/classic-integrations/modify-payments"
source_url: "https://docs.adyen.com/online-payments/classic-integrations/modify-payments.md"
canonical: "https://docs.adyen.com/online-payments/classic-integrations/modify-payments"
last_modified: "2019-11-27T13:26:00+01:00"
language: "en"
---

# Modify payments

Learn how to capture, cancel, or refund a payment.

[View source](/online-payments/classic-integrations/modify-payments.md)

**Adyen is no longer developing the Classic API integration**

This page is for the Classic API integration, which we no longer accept new integrations with.

We strongly recommend migrating to the newer [modification endpoints](/online-payments/modify-payments) using the Checkout API integration. To use this newer integration, you must also [migrate to the Checkout API](/online-payments/upgrade-your-integration/migrate-to-checkout-api).

Capture, cancel, and refund actions are called *modifications*, since they modify the state of a payment. The possible payment modifications are: 

* [Capture](/online-payments/classic-integrations/modify-payments/capture) – Capture approved authorisation when it is necessary to complete the payment.
* [Cancel](/online-payments/classic-integrations/modify-payments/cancel) – Cancel authorisation when the payment has not yet been captured. 
* [Refund](/online-payments/classic-integrations/modify-payments/refund) – Return the funds to the shopper when the payment has already been captured.
* [Cancel or refund](/online-payments/classic-integrations/modify-payments/cancel-or-refund) – Return the funds to the shopper when you are not sure whether the payment has been captured. 
* [Adjust authorisation](/online-payments/classic-integrations/modify-payments/adjust-authorisation) – Adjust the authorised amount after the initial authorisation.

For information on how to cancel and refund in-person payments, refer to [Cancel a payment](/point-of-sale/basic-tapi-integration/cancel-a-transaction) and [Refund a payment](/point-of-sale/basic-tapi-integration/refund-payment).