BALANCE interest calculation ( RFKIS00/RFDZIS00 )

Hi Gurus,

I am having an issue and I need some help.

For programs: RFKZIS00 & RFDZIS00 ( Balance Interest Calculation )

I have to split the interest for the samevendor / customer byCurrency. As it is a solution that I have to roll out to different countries, use special GLs is not an option.

FOr instance:

Vendor 123456

200000 USD  -  3.124 %

300000 EUR - 3.423%

Interest calculation for line item ( RFINTITAR & RFINTITAP ), there is a BADI which allows me to adjust the report as I want. BADI ( FI_INT_CUS01 ). Someone know a similar BTE/User Exit/BADI which help me to accomplish this requirement for Balance interest calculation?

Thanks