Payment currency differs from contract currency in TRM Interest rate instruments

Dear community,

We request a assistance with the beneath scenario: The involvement complaint instrumentality is entered successful section currency, and each postings, accruals and valuations are successful section currency. But we request to cipher magnitude of involvement and indebtedness payments successful overseas currency (USD,EUR) astatine fixed speech rate. The outgo petition should beryllium created successful the calculated magnitude and overseas currency should beryllium mentioned.
Is it imaginable to bash with modular configurations? Or we should alteration the modular BADI for TBB1, adding further fields for outgo currency, the rate, and the logic to cipher outgo amount.
Is it imaginable to adhd postings of overseas speech transaction nether the payment?

Will admit your assistance .