STEP 1
Consult table with SM30
Enter the table ZZRT179V and 
STEP 2
The product hierarchy is displayed
The group is a PIF (=lowest level of the hierarchy) when there is a flag in the column (Flag PIF)
The Code Prix de Revient (=CPR) in the column DCT prx is the code used for the report PRG (Prix de Revient de Gestion)
