how to make LOP as paid when employee went for leaves other than Anual leave and emergency leave?

: i have a question
regarding a wage type (1230= food and refreshment) which is maintained in info type 14,
if an employee applied for a leave in 2001 info type( annual leave or emergency leave), 1230 wage type should be deducted as per the number of days leave period.
but when an employee applied for LOP, 1230 should not be get deducted
how to maintain it, i changed the processing class but its not working
Is any modification of PCR required?