Hi, Magento ecommerce always have Authorize.net payment Method (AIM).SO
you Can use this Authorize.Net AIM Method. In Magento Admin
System->Configuration->Payment Method You can see Authorize.net payment
Moethd in that you can Customize with your AUt...
HI Please verify this Post
http://community.developer.authorize.net/t5/Integration-and-Testing/Sample-code-for-CIM-Refund-for-integeration-and-Testing-Pls-help/td-p/11340
BalakrishnanSr DeveloperTrinay Technology
Solutionswww.trinaytech.com570-575-04...
Hi, For example if you used credit card number 4111111111111111 you need
to pass in as a masked cc# so it will be x_card_num=XXXX1111 if x_type=
CREDIT (Refund process) BalakrishnanSr DeveloperTrinay Technology
Solutionswww.trinaytech.com570-575-0475