GPA Getting started

Global Payment Application (GPA) is a standard payment solution for Engage platform. It delivers a consistent cross-device experience and supports regional and local customization through a plug-and-play model.

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What you will find in this space

• End-user and operator guides for GPA devices.

• Integration guides for NEXO and semi-integrated deployments.

• Technical reference for payment features, configuration, operations, and security.

• Developer toolkits for POS and host module.

• Installation, migration, download, and support material.

Quick Start

1

Unlocking GPA

Start here to understand what GPA is and how the solution is structured.

These pages explain the core application model and the main design patterns used across deployments.

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2

GPA Downloads

Download the latest GPA package and explore the release notes to see what’s new.

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3

Application Loading

Load GPA onto the terminal before setup begins using IDS or SYSMODE.

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4

Terminal Setup

Complete terminal setup after the application is loaded.

Warehouse Install

This path will guide a warehouse engineer through the GPA installation process, in order to prepare the terminal for the merchant.

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Self Install

Define your Next Step

1

Integrate with an ECR or POS

Start here for semi-integrated payments and NEXO message flows.

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2

Build or Customize GPA

Start here for architecture, behavior, data models, and toolkit flows.

3

Migrate GPA

Start here to plan and execute a version upgrade.

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4

Troubleshoot and Support

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Start here to diagnose issues in the field and resolve common support tasks.