Interest and amortization calculation order in SAP TRM cash flow

[Andersonm]

Hello, experts,

I am facing the following problem:

I have a money market deal that initially has only one condition for interest capitalization. However, after a certain period, interest payments and amortizations start to occur in installments.

The interest payment occurs in the middle of the month, and I use a daily interest rate adjustment, since the interest rate can vary more than once within a single payment period. In addition, the calculation must consider that the payment date itself also accrues interest. To do this, I activated the "Inclusive indicator for calculation date" parameter in condition 1200 - Nominal Interest, ensuring that the calculation of interest days is correct.

The problem occurs because the amortization is paid on the same date as the interest. Since interest is calculated on the payment day itself, the cash flow first amortizes the principal and only then calculates the interest for the last day. This causes the calculation base for the last day of interest to be reduced incorrectly, since the principal decreases before the final interest calculation.

Given this, is there any way to define the order of priority in cash flow so that interest is calculated before the principal is repaid?

Thank you in advance for your help!