Hi,
I suggest to create loan details in infotype 45 in test system (with your loan conditions, instalment, repayments etc). Then write a PCR like given below:
ZLON
*
/LRP
TABLE0045 (read loan table PA0045)
VAKEYLNTYP (loan type in v.key)
0010
AMT%40
ADDWTE9001
AMT=0
ADDWTE/LRP
In above pcr, I am reading table PA0045 and checking the loan type (example 0010). If it matches with this loan type, then I am calculating the 40% of that /LRP wage type (loan repayment) and it is stored in another wage type 9001 - which will be paid to the employee. I am making /LRP as 0 (since it is not deducted from employee).
Make the repayment schedule as quarterly in IT 45. Check above logic works, then we can add your additional conditions (like employee level or grade etc) in the PCR.
regards,
Bala.