I have set up the Authorize.net AIM error and get the following error when I try to check out.

The supplied currency code is either invalid - Your credit card could not be authorized for this reason. Please correct any information and try again or contact us for further assistance.

From the research I have done the AIM module doesn't even send the currency code so I'm not sure why I get the error.

I have my currency set for dollars - USD as the default. I have not changed anything here.