You can add an optional piping commodity code to the Piping Commodity Filter rule. For example, the new requirement dictates that the 1C0031 pipe specification needs an optional gate valve for the 0.75 inch to 1.5 inch size range.
Open the Piping Commodity Filter sheet.
Locate the record, edit the Commodity Code value, and then type A at the beginning of the record.
Bulkload the spreadsheet, and review the log file.
Verify your changes, and resolve any discrepancies.
The corresponding piping part definition and the material control data for the new optional contractor commodity code must exist in the catalog.