In this thread you have an extract from an official PDMS manual.
You can use the command line. So please just read C:\AVEVA\Plant\PDMS12.0.SP6\Manuals\Docs\Design Reference Manual - Utilities.pdf
Or you can use the GUI. Utilities-->Data Consistency.
Is it not enough?
If not, you/your company can contact your local AVEVA office and ask for a training course.