Transaction FPINTM2 - Cash Security Deposit Interest Calculation Issue

Hi Experts,

I have a requirement where I have to perform below two actions on cash security deposit while calculating interest in mass using transaction FPINTM2.

1. When I am calculating next year SD interest, it is not picking previous year interest amount. My requirement is to calculate next year interest on Security deposit + all previous years interest.

   2.  Cash security deposit should be calculated considering number of completed months.

    For Example:-

• If start date is 20.01.2015 to 21.02.2015 then completed month is '0' ( because there is no single complete month)
• if start date  is 01.01.2015 to 20.07.2015 then completed month is '6' .
• if start date is 01.01.2015 to 31.07.2015 then completed month is '7'.

Please let me know how to handle it.

Thanks in Advance.

Kind Regards,

Ankur