I am trying to setup the this module Authorize.net (SIM) payment method http://www.ubercart.org/contrib/5049 but I keep getting this error when I try to complete a transaction:
"The following errors have occurred.
(99) This transaction cannot be accepted."
The Authorize.net translation states it is:
"Applicable only to SIM API. The server-generated fingerprint does not match the merchant-specified fingerprint in the x_fp_hash field."
which I assume is my MD5 hash I have at authorize.net.
Where exactly do I place my MD5 hash or what may be creating this error?