The Authorize.Net Developer Blog

Posts from Authorize.Net employees, community members and experts about integrating with the Authorize.Net Payment Gateway: sample code, tutorials, and problem-solving techniques, just to name a few.

Merchant-Defined Fields – What are they and how should they be used?

by ‎04-14-2011 11:38 AM - edited ‎04-14-2011 02:30 PM (27,341 Views)

When you’re designing a payment form or other application, you may find that you need to submit certain fields for your merchant that aren’t specifically supported or called out in our integration guides. Enter the Merchant-Defined Field (MDF)—an easy solution for this common need.