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Has anyone implemented a CiviCRM payment processor that uses the Authorize.net SIM method? (http://developer.authorize.net/api/)
The docs say that CiviCRM does not have support for this.
At this time, CiviCRM only supports the Advanced Integration Method.
My reason for asking: the SIM method reduces our campus-policy compliance burden compared to the AIM method.
I don't think anyone has submitted a patch to enable SIM support for auth.net. Might be beneficial for you to investigate and see how much work might be involved in adding this to the current auth.net codebase.
