Code to represent the basis price type.
Valid values:
| '2' | Closing Price at morning session |
| '3' | Closing Price |
| '4' | Current price |
| '5' | SQ |
| '6' | VWAP through a day |
| '7' | VWAP through a morning session |
| '8' | VWAP through an afternoon session |
| '9' | VWAP through a day except YORI |
| 'A' | VWAP through a morning session except YORI |
| 'B' | VWAP through an afternoon session except YORI |
| 'C' | Strike |
| 'D' | Open |
| 'Z' | Others |
Used in: