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How to configure Shift4 for Integrated Credit Card Processing

Shift4 enables secure credit card processing directly within rezStream Cloud. This article explains how to access and configure your Shift4 payment processing settings.

  1. Navigate to the Configuration tab and select Payment Settings



  2. Click on the Credit Card Processing tab.



  3. Credit Card Gateway: Confirm it is set to Shift4.
  4. Accepted Cards: Visa, MasterCard (including Maestro), Discover (including Diners Club), American Express, JCB. 
    1. The Accepted Cards settings under the Credit Card Processing tab allow you to enable or disable specific card types accepted by your gateway.

      Please note: disabling a card type here only affects transactions processed through the payment gateway. It will not automatically remove that card type as an option on your booking engine.

      To fully block a card type across both your property and online booking engine, you’ll need to contact Nexio Support and have that card type removed completely.

  5. Accepted Currency: Set to USD (must match your merchant account).
  6. API Credentials: Enter the rezStream Cloud PMS Authorization Token (provided by Shift4) in the Shift4 Authorization Code field. 

    If you are using a Shift4 PAX A800 Terminal, click here to learn how to pair and enable your new terminal.