Register a balance for an interest-bearing account using a previously configured interest plan to determine applicable interest rates.

This endpoint generates the Interest balance succeeded event when the balance is created successfully.

The event payload includes: program_id, balance_id, account_id, interest_plan_id, balance, start_cycle_date, value_date, and maturity_date. Optional fields division_id and external_account_id are included in the event only when present in the request.