Before you start converting the PPM database, perform a converter test run to identify possible problems.
Procedure
Execute the following command in the bin directory of your PPM 9.9 installation <PPM99_CLIENT_RUN>/bin.
runppmconverter -client <client> -user system -password <password> -check
If warnings occur during the converter test run (log output starting with W:) you can usually perform the conversion without taking any action.