
Originally Posted by
econcepts
Try setting the MD5 Hash value in your Authnet account then copying that value over to the section in your admin that currently says "MD5 Hash Key is "Set a Hash Value at AuthNet Admin"
That needs to be set for it to work.
In the end, push a test transaction through (and I recommend before you go live with it you run a production transaction as well just to make sure it is working.)
Let me know if altering that MD5 works.
(I am assuming by saying the Login and Transaction IDs are "SET" you already entered those as well.)
One last thing. Why have you chosen the SIM method? Are you able to use the AIM method (which keeps the customers on your site to order?) You would need an SSL certificate for this to work though. (The AIM method).