Field UnderlyingPaymentScheduleStartDateUnadjusted (40667) - FIX Protocol FIX.5.0SP2 EP240

The unadjusted date on which the value is adjusted, or calculated if a future value notional for certain non-deliverable interest rate swaps (e.g. Brazillian Real (BRL) vs. CETIP Interbank Deposit Rate (CDI)), or the start date of a cashflow payment.