Prerequisites {#vas-adobe-commerce-prereqs}
===========================================

Before using the extension, ensure that you have done these prerequisites:

* A Visa Acceptance Solutions account with `Unified Checkout` enabled.
* Payer Authentication direct connection if `3-D Secure` is required.
* A Token Management Service if you allow customers to save their payment cards on your website.
  {#vas-adobe-commerce-prereqs_ul_s5v_wvs_rdc}  
  Contact [support](https://support.visaacceptance.com/ "") or your reseller if any of these prerequisites are not completed.  
  If you do not yet have a Visa Acceptance Solutions account, you can create one [here](https://developer.visaacceptance.com/hello-world/sandbox.md ""). Demo accounts are created with United States dollars as the default currency.  
  Refer to this [article](https://developer.visaacceptance.com/docs/vas/en-us/platform/developer/all/rest/rest-getting-started/restgs-intro.md "") on how to create REST API keys in the `Business Center`.