The APl Items are found in MSF131. If the item has a Stock Code, it's description will in MSF100. That is actually a natural join.
In Ellipse, a Stock code can have multiple mfg/part#, which you'll find in MSF110. They can also have muliple vendors, which are in MSF210.
The Component Description is hald in MSF010, Table Type = 'CO'.
Lastly, the equipment assigned is held partially in MSF130 and partially in MSF600; use only the first 2 segments of the 5-part key (13 characters).