Please don't test your biller setup with NATS4 Global Access's test account—it won't work correctly.
Setting up on Global Access' Site
Signup for an account with Global Access. Create the join options you intend to use and
copy the product codes.
Find the password script location and set it to:
http://linkdomain/signup/passwd_gaccess.php
After that find the return URL location and set it to:
http://linkdomain/signup/returnurl_gaccess.php
In both cases, linkdomain is the linkdomain to your site.
Setting up Global Access in NATS
Go to the Billers Admin, select GXBill from the drop-down, and click
Add. Input your Account Number, Username, and Password you received
from Global Access.
Go to the Sites Admin, edit or create a tour, and go do the
Special Join options section. Create the join options for your sites and for each one input the coresponding product code from Global
Access.