The day count convention used in the payment stream calculations.
| Code | Meaning |
|---|---|
| 0 | 1/1 |
| 1 | 30/360 (30U/360 or Bond Basis) |
| 2 | 30/360 (SIA) |
| 3 | 30/360M |
| 4 | 30E/360 (Eurobond Basis) |
| 5 | 30E/360 (ISDA) |
| 6 | Act/360 |
| 7 | Act/365 (FIXED) |
| 8 | Act/Act (AFB) |
| 9 | Act/Act (ICMA) |
| 10 | Act/Act (ICMA Ultimo) |
| 11 | Act/Act (ISDA) |
| 12 | BUS/252 |
| 13 | 30E+/360 |
| 14 | Act/365L |
| 15 | NL365 |
| 16 | NL360 |
| 17 | Act/364 |
| 18 | 30/365 |
| 19 | 30/Actual |
| 20 | 30/360 (ICMA or basis rule) |
| 21 | 30E2/360 (Eurobond basis model two) |
| 22 | 30E3/360 (Eurobond basis model three) |
| 99 | Other |