Hi Deepan.
Actually there is no exact raltion. But in table view V_512W_D, every processing class text contain CYCLE xxxx. It means then standard PCR for this Processing class.
Additionally, in PCR there are VWTCL operation which is using to determine processing and evaluation class. While you call PCR via Payroll scheme you use Exx or Pxx which means that, PCR will run according processing or evaluation class.
If you look your payroll schema, you can understand which PCR works with which Processing classes.
Regards,
Samir Musayev.