When conduit parts are saved to your project workspace the first time, the default file names are used. The name includes a suffix of a 13-digit number that is generated based on your system time. You can customize the conduit file naming convention when you enable the Prompt for Conduit File Names option or by selecting the Enable Part Number Setting within the Tube and Pipe Settings dialog box. By selecting this check box, you can select whether you would like to inherit a name from Content Center, customize a file name, or leave the File Name empty.