UnderlyingPaymentScheduleStepFrequencyUnit (Tag = 40681, Type: String)

Time unit associated with the step frequency.

Valid values:

'D'	Day
'Wk'	Week
'Mo'	Month
'Yr'	Year
'H'	Hour
'Min'	Minute
'S'	Second
'T'	Term

Used in:

• <UnderlyingPaymentScheduleGrp>