> ## Documentation Index
> Fetch the complete documentation index at: https://developer.hellgate.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Refund notification

> The notification is used to inform a listener about changes to a refund.

The listener must respond with an HTTP status code 200 to acknowledge and accept the notification.
If a different status code is returned, Commerce will attempt to resend the notification,
following a retry policy until the notification is successfully acknowledged or the maximum
retry limit is reached.




## OpenAPI

````yaml /products/commerce/v2/openapi.yaml webhook refundNotification
openapi: 3.1.0
info:
  title: Commerce API
  version: '2.0'
  description: >
    The Commerce V2 API provides a comprehensive payment orchestration platform
    designed to streamline and optimize payment processing for modern
    businesses. 

    Built with flexibility and security at its core, our API enables you to
    process payments, manage authentications, and handle cardholder data across
    multiple payment processors without vendor lock-in.
  contact:
    name: Starfish GmbH & Co. KG
    email: hello@starfish.team
    url: https://hellgate.io/cpa/commerce
  license:
    name: Commerce API Terms
    url: https://hellgate.io/terms-and-conditions
servers:
  - url: https://sandbox.hellgate.io
    description: Commerce SaaS Sandbox
  - url: https://api.hellgate.io
    description: Commerce SaaS Production
security: []
tags:
  - name: payments_ci
    description: >-
      Handle payment processing where the customer is actively present and
      authorizing the transaction.
  - name: payments_mi
    description: >-
      Process transactions without direct customer interaction at the time of
      payment.
  - name: payments_modifications
    description: >-
      Modify existing payment transactions after initial authorization (capture,
      void, refund).
  - name: payments_data
    description: >-
      Access comprehensive payment transaction data for reporting,
      reconciliation, and analysis.
  - name: refunds_data
    description: Access detailed refund transaction data for tracking and reconciliation.
  - name: authentications_ci
    description: >-
      Process EMVCo 3-D Secure authentication requests as standalone
      transactions (one-off, recurring, installment).
  - name: authentications_mi
    description: >-
      Process requestor-initiated EMVCo 3-D Secure authentication requests (3RI)
      as standalone transactions.
  - name: authentications_data
    description: Access the results of prior authentications for reference.
  - name: credentials_management
    description: >-
      Manage stored payment credentials for repeat customers across all
      operating models.
  - name: tokens_create
    description: >-
      Create and import Commerce tokens to securely store cardholder data while
      maintaining PCI DSS compliance.
  - name: tokens_management
    description: Manage stored Commerce tokens including CVC2 security code management.
  - name: compliance_service
    description: >-
      Safely handle sensitive cardholder data while maintaining PCI DSS
      compliance via a secure proxy service.
  - name: network_tokens
    description: >-
      Manage network tokens with major card schemes with automatic lifecycle
      management.
  - name: merchants
    description: >-
      Configure and manage merchant accounts based on your chosen operating
      model.
  - name: reconciliation
    description: Reconcile imported token data.
  - name: processor_backup
    description: >-
      Migrate payment tokens from third-party processors (currently supports
      stripe.com).
paths: {}

````