Element 2151: Period type code
| Nr | 2151 | 
| Name | Period type code | 
| Beschreibung | Code specifying the type of period. | 
| Anmerkung | |
| Format | AN..3 | 
Werte
| Wert | Bedeutung | 
|---|---|
| 3M | Quarter | 
| 6M | Half-year | 
| AA | Air hour | 
| AD | Air day | 
| CD | Calendar day (includes weekends and holidays) | 
| CW | Calendar week (7day) | 
| D | Day | 
| DC | Ten days period | 
| F | Period of two weeks | 
| H | Hour | 
| HM | Half month | 
| M | Month | 
| MN | Minute | 
| P | Four month period | 
| S | Second | 
| SD | Surface day | 
| SI | Indefinite | 
| W | Week | 
| WD | Workday | 
| WW | 5 day work week | 
| Y | Year | 
| ZZZ | Mutually defined |