I am connecting one part to another in wtpPart to retrieve the AlternateNumber through Windchill. It appears in WtpartAlternateLink, but when I check the part via servlet/odata/ProdMgmt/Parts('OR:wt.part.WTPart:#######'), the 'AlternateNumber' comes as null. Can you please help me understand the reason for this? Is there a different method to add AlternateNumber to a part through Windchill? If so, could you please explain?