Specifies the contractor commodity code for an alternate reportable piping commodity that is to be created with the primary piping commodity on the basis of the piping materials class. In an isometric drawing, only the primary piping commodity is depicted graphically. The materials list includes the short description of both the primary piping commodity and the reportable piping commodity. The data for the reportable piping commodity includes a commodity code and the corresponding short and long material descriptions, plus the typical data that is reported for any other piping commodity.