Hi Raghu,
Standard schema does it. For example if you go international version (X000) you can see sub-schema XLR0 loads previous payroll result. This is not what you are looking for?
By the way, YCURPP does not mean current period. Maybe you have considered it in a simple scenario.
There is a concept in payroll for in-period and for-period. YCUPP returns in-period. Means by this operation you can understand payroll is running for which period.
Imagine you are running period in 3rd period but because of retruactive calculation system goes back and run from 1st period. In this case system will run payroll for 1st, 2nd and 3rd periods. The parameter In-Period for all of them will be 03. This means the new result of payroll run for 1st and 2nd period has been generated in period 03 but For-Period for them will be 01 and 02 respectively.
I hope you get In-Period and For-Period concept.
Regards,
Omid