Time unit associated with the minimum frequency of the instrument maturity intervals.
Usage note: When UnderlyingFlexibleIndicator (2035)=Y and the underlying maturity is user-defined, set UnderlyingMaturityFrequencyUnit (2984)=F (Flexible).
| Code | Meaning | 
|---|---|
| H | Hour | 
| Min | Minute | 
| S | Second | 
| D | Day | 
| Wk | Week | 
| Mo | Month | 
| Yr | Year | 
| Q | Quarter | 
| EOM | End of Month | 
| F | Flexible |