Using Master Data Overview of Master Data NAICS Codes Editing a NAICS Code 1.14.2 Editing a NAICS Code To edit a NAICS Code, follow these steps: Select the check box in line with the NAICS Code name. Click Edit NAICS to open the Edit NAICS Code window. Enter a new name. Click Save to save the NAICS Code.The new NAICS Code appears on the NAICS Code grid.