Why isn't the Customer Part Number Displayed on the BOM Main Screen?

Q.  Why isn't the Customer Part Number Displayed on the BOM Main Screen if the part source is "BUY"?

A.  The customer part number is only shown on the BOM Main Screen when it is a "CONSG" part, unless user has checked the box to "Display Customer #  for the "BUY" parts if BOM linked with a customer" located on the find screen, (however this may slow down the results).  This is why the customer part number for a "BUY" part is only shown on the Detail screen and not the BOM Main screen for a "BUY" part.