Dear Venkat,
as you mentioned, you have a daily interest rate adjustment in the deal: the system will thus create separate interest rate flows to adapt the calculation base change.
And for each of these business transactions, there will be a single document created in standard.
The separate postings are necessary to create correct balance and profit/loss statement on the each day of the period, even if the due date is the same for some or all of them.
Best regards,
Marie