Helcim Gateway - Developers

The Helcim Gateway gives merchants a more integrated payment processing solution. It allows merchants to make a direct connection with our processing gateway to create a truly customized payment solution. The Helcim Gateway is for merchants who have, or will hire someone, with the knowledge of the development and security requirements involved with programming for a processing gateway.

Requirements

In order to use the Helcim Gateway you will require the following:

1. Knowledge of the Payment Card Industry Data Security Standard and how it will apply to your situation.
2. A valid SSL certificate.
3. A server with a scripting language capable of sending and receiving an HTTP connection and POST/GET variables.
4. Knowledge of HTML.
5. Knowledge of a server-side scripting language (PHP, ASP, JSP, etc...)

Developers Kit - Documentation

Helcim_GatewayDocument_v2.005.pdf
Helcim_GatewayDocument_v2.005.xps

This document is available in both PDF and XPS formats. Click here for more info on formats.

Document Revisions

Release Version 2.005

Updated code samples.

Release Version 2.004

Added a note about case-sensitivity.

Added section about recurring billing.

Release Version 2.003

Clarified value pair response.

Release Version 2.002

Added code samples.

Added field lengths and types for request and response variables.

Added CVV2 error simulation codes for general errors, CVV2 responses and AVS responses.

Added noticeMessage to give more information on invalid optional request variables.

Release Version 2.001

Initial release for Helcim Gateway Version 2.