Help
  • Knowledge
  • Academy
  • Collections
  • Updates
  • Docs
  • Contact
  • Status
  • Singapore (English)
    Global (English)
    United States (English)
    Deutschland (Deutsch)
    España (Español)
    Mexico (Español)
    France (Français)
    Italia (Italiano)
    日本 (日本語)
    Brasil (Português)
    中国 (简体中文)
Knowledge
Payments

Payment basics

Find payments and understand basic terms.

Green credit card with chip and contactless payment symbol.

General questions

What is a PSP reference number?
How can I find a payment?
What is an offer and how do I search for one?
What is a merchant reference?
Where can I find the Acquirer Reference Number (ARN)?

Related content

  • Smartphone with health app next to a credit card and text bubble.
    Payment methods
    How do I add a payment method?

    You can add payment methods by requesting them from your Customer Area (test or live).

  • Stylized illustration of a mobile device with a check mark on the screen, indicating a successful transaction.
    Docs English
    Look up payments

    Learn how to look up and manage payments in your Customer Area.

  • Stylized yellow credit card icon integrated with a circular pattern.
    How to
    How to track a transaction's status

    Discover how to monitor payment statuses with this video guide. After signing in to the customer portal, navigate through the steps and view various payment stages by selecting a specific transaction.

  • Adyen logo.
    Blog English
    Payments: A brief history and 12 common payment terms

    Learn about key players and big changes in this brief history, covering 40 years of the payments industry.

  • Stylized web interface with charts and user avatars.
    On-Demand
    Customer Area

    Discover your payments control centre and optimize your processes.

  • Knowledge
  • Collections
  • Product updates
  • Academy
  • Webinars
  • How-to videos
  • Courses
  • Products
  • Pricing
  • Payments
  • Risk management
  • Authentication
  • Company
  • Adyen.com
  • Our story
  • Newsletter
  • Careers
  • Privacy
    ·
  • Cookies
    ·
  • Disclaimer
    ·

© 2025 Adyen