Upgrade Guide

The items on this page represent API Implementations that are supported but no longer actively maintained or enhanced. For newer alternatives, please see below.

Using our current API guarantees that you will always have:

  • The latest features

  • Continual updates and improvements

  • The most active community of fellow developers

For questions about migrating an existing solution, please contact our developer support team.


Understanding the Authorize.Net API

If you previously integrated with the Authorize.Net platform, you may be used to seeing each of our features documented as separate and distinct APIs. Within our newer documentation, you’ll find that all of our features are a part of a larger cohesive API set.



STATUS: Deprecated 

The Authorize.Net API includes all of the SOAP API functionality plus additional features such as Authorize.Net Accept, creating one-time transactions and enhanced Customer Profile methods.  

We have deprecated our SOAP API that offered support primarily for Customer Information Manager. We strongly recommend that developers move to the Authorize.Net API using XML or JSON. This will allow us to continue providing developers with the most up-to-date features and to support a single, consistent platform.


Advanced Integration Method (AIM)

STATUS: Supported but no longer updated

AIM transaction methods are now included in  Payment Transactions in the the API Reference using XML.

If you are using our legacy Name Value Pair (NVP) method, you may refer to the AIM NVP documentation:

AIM NVP Guide (PDF)PayPal AIM NVP Guide (PDF)   


Hosted CIM

STATUS: Deprecated / End-of-Life on March 1, 2018.

Upgrade to Accept Customer

Hosted CIM has been replaced by Authorize.Net Accept Customer, a fully hosted solution for capturing payment information that allows developers to leverage our Customer Profiles API while maintaining SAQ-A level PCI compliance. Our forms are mobile-optimized and designed to reduce friction in your consumer experience.

Hosted CIM pages at https://test.authorize.net/profile/ are no longer being updated and will return HTTP Error 410 after March 1, 2018.


Server Integration Method (SIM) and Direct Post Method (DPM)

STATUS: Supported

For new hosted payment form implementations, we recommend using Accept Hosted.  For new DPM implementations, use Accept.js.

SIM provides ways to assist developers with PCI compliance. Using SIM, a developer could send the customer to a payment form generated and hosted on the Authorize.Net site. Using DPM, a developer could have their own form send payment data directly to the Authorize.Net site for processing.

The Accept suite of tools provide a modern implementation of these functions in a way that's more flexible and reliable for developers. We recommend developers looking to implement a hosted payment form use Accept Hosted. Developers who want to create and host their own form without processing or storing sensitive information on their server can use Accept.js to receive a one-time use "payment nonce" to use in place of the card data.

Developers using the SIM hosted payment form or DPM should consider moving to the Accept tools. Developers still using SIM can find archival documentation in our Server Integration Method (SIM) Guide (PDF).