This blog post shows, how easy it is to import advanced G/L account determination rules in SAP Business One via Excel. This post provides a coresuite customize new menu rule plus an Excel template.
I just updated a few account on the SAP Business One GL account determination guide.
In every SAP Business One project, a proper account determination if crucial. If there is something wrong, you will not become best friend of your customers CFO. I just uploaded a manual about SAP Business One Account determination with plenty of examples and print screens in the download section of my page.
David Emmenegger and me, we are working on a detailed manual for the complete account determination for SAP Business One 8.8!