Hi, Steve,

Okay, this is how you do it.

Either copy the Description column from the IC Master (1) table view to the IC BOM List Detail table view or use the Edit | Insert Related Column function.

Then, edit the Description calculated column and change the last parameter from {Master Item #} to {Component Item #}.

The formula becomes: GETEXTERNALDATA("@N81CICM", "Description", "ICITEM", {Component Item #})

This is working for me.