Hi SK,
I have not said used as a deduction in the T511.
If you would like to show in the window 1 under payment colum but wage type characteristics is deduction.
Then it's not required to do any PCR. You have to go with normal deduction wage type characteristics and in the payslip you can bring it in the payment colum as negative sign. So in the total net pay will effect and will match with RT result.
Regards,
Sankarsan