Interchange and authorize.net
I have been working with a customer in getting Interchange setup for his online store. We have everything functional except for the integration with authorize.netDoes anyone here have any experience with this? My customer entered his authorize.net variables through the interchange interface (his userid, p/w etc) but every credit card transaction fails and the error log states "No account ID" as the reason.
The authorize.net people say this is THEIR error message, so it seems the user/pass isn't being passed to them properly.
I have spent about 4 hours on this problem last night and came up with no solution. All the google searches didn't help, as I tried everything listed

Ideas?