These are what I have found to be the most commonly used tables in RM. To see the most common customer windows mapped out look here.
RM00101 – Customer Master
RM00102 – Customer Addresses
RM00103 – Customer Master Summary
RM00104 – Customer Period Summary
RM00106 – Statements Email Addresses
RM00301 – Salesperson Master
RM00302 – Salesperson Master Summary
RM00303 – Sales Territory Master
RM00305 – Sales Territory Master Summary
RM10101 – Distribution Unposted
RM30301 – Distribution History
All check boxes in GP: unchecked is a 0 (zero) in the DB and checked is a 1.
All drop down menus on windows, just count down the selection in the drop down: the first item listed is a 1 in the DB, second a 2, etc.