Sage 300

When looking at a Customer record, on the Invoicing Tab, the Customer Type has the choices of Base, 1, 2, 3, 4, 5. What are the meaning of each of the Types and where can I set these?

I am a Sage Certified Consultant. I subscribe to the announcements forum. I am supposed to have new posting emailed out to me. This did not happen. My customer just received the CP72DSP1 notice by email, but I do not. How do I get back on the Customer…