Never Built : Error With Wt Part Structure.

We have an assembly say xyz.asm who's part Structure shows excluded. (Information Page of CAD Assembly --> Action --> Compare Part Structure --> On Wt Part Structure window all part shows Exclude)

When I compare its CAD Structure (Information page of WT Part xyz.asm --> Action --> Compare CAD Structure --> Never Built: The Part and CAD Document have been never Built. The Build CAD Structure action will update the existing CAD Document use and CAD Document to have the same attributes as the parts.

How do I resolve this Issue?

Thanks & Regards

Kshitiz