Store Period performmance

Hai all

In Primavera I am trying to learn store period performance option .  When I tried to delete the some financial period I am getting the error message " The Selected Financial Periods has one or more activities or resource assignment with store period performance details . The financial period will not be deleted ".

To fix the error we need to delete the assigned financial period respective project , In my system there are 30  number of projects. I am  not able to find which project i have done store period performmance  .

Is there anyway  to find in which project store period perfrommance is  done .