Overview

This topic describes the Nuvei Server-to-Server integration for accepting payments using Nuvei APIs and Nuvei Server SDKs (Java, PHP, .NET, Node.JS).

The Server-to-Server payment flow steps are described below.

Who Uses the Nuvei Server-to-Server Integration

The integration is suited to:

PCI level-1 merchants – Merchants with the highest PCI level, who process, transmit, and store cardholder information for themselves.
Multiple-PSP processing merchants – Merchants who process with Nuvei as well as other PSPs and acquirers.

Server-to-server integrations are relatively complex. In most cases these integrations are less recommended than our Web SDK and Payment Page solutions, which are easier to implement.

Server-to-Server Flow Integration Steps with 3D-Secure – Showing Frontend Web Handling and Backend Calls

Using the Server-to-Server integration (even when combined with some of our Web SDK components) requires a thorough understanding of the 3D-Secure flow:

For a more detailed view, see the sequence diagram for this flow.

Simulating and Testing your Integration

You can use Postman to run full “3D secure challenge flow” and the “3D secure frictionless flow” workflow simulations in the Nuvei sandbox environment.

To install Postman and the relevant simulation collection, follow the steps in the Testing APIs with Postman topic.

Refer to the Testing Cards section for Nuvei test card details and instructions on how to use them in the supported scenarios.

Other test values on the code samples:

Use CL-BRW1 as the cardHolderName for the challenge flow.
Set amount greater than 150 to trigger a challenge.

The test card used in the code samples demonstrates 3D-Secure v2 flow.

To begin integrating, see:

REST 1.0
Server SDKs