Having issue in Payroll function P0014 with Payment model in Info type 0014

Question

Hi All,
I configured payment model for bi-weekly payroll area.
Payment  model is configured in a way that deduction/payment only happen in first pay period of a month in IT0014.
Position 5 in table T549X payment in first pay period of 2011.. partial in Dec 2010 and in Jan 2011.
Position 6 in table T549X Pay period 2 --> should not be any deduction/payment
Position 7 in table T549X Payment in third pay period
Position 8 in table T549X Pay period --> should not be any deduction/payment
Position 9 in table T549X Payment in 5th pay period
I checked logic of payroll function P0014
In perform "chck_last_pay" which is specific to P0014 or W0014
In Pay period 1 function reads pay period which is greater than 1 in this case it is 2
LOOP AT T549z WHERE ( pabrp > $pabrp AND pabrj = $pabrj )
                    OR ( pabrj > $pabrj ).       "#EC PORTABLE
period = $i549z-pabrp(2) + 4.   Pay period 2 +4 = 6
In 6th position of table T549X PP02 exist ; there should not be any payment/deduction
ASSIGN COMPONENT period OF STRUCTURE t549x TO <period>.      
so after exiting from this perform payroll function checks CRT there is no monthly payment so deduction happen .
However becasue of above loop and read statement in perform chck_last_pay there is no deduction/payment from PP03.
So I want to know how can I resolve this issue, any suggestion or idea.
Thanks

Answer 1

Hi Payment model is attached to premium wage type specific to company.
I only found difference.
If following values are not matched then system do not calculate deduction as it supposed to do.
T549R-ZEINH <> T54C2-ZEINH
If following 2 values are matched then deduction payment model works at it suppose to work.
in my case
In table T549R
For Bi weekly payroll area Period parameter (PERMO) is 04
and time unit (ZEINH) is also set to 04.
However in table T54C2
Cumulation type (CUMTY) is M
and its time unit is (ZEINH) is 01
In table T549W
Model is ZPBI
Date modifier is 00
Period parameter (PERMO) is 04
Cumulation type PPERM  is M
any suggestion what should I do in this case.
Thanks,