/mnt/dvd/AppStream was not found

I am using Windchill PDMLink Release 12.1 and Datecode with CPS 12.1.0.2

如何在linux上扩展全局属性的字段，目前按照CS94753的指导执行出现异常，不知道如何继续，急需帮助

Here are the errors that I faced
/mnt/dvd/AppStream was not found