| Possible values |  |
| Frozen Period The frozen period. You receive a warning when you are in the period during which you cannot change the scheduled quantities. Frozen Period (+) The frozen zone+. You receive a warning when you are in the period during which you cannot increase the scheduled quantities. Frozen Period (-) The frozen zone-. You receive a warning when you are in the period during which you cannot decrease the scheduled quantities. Free The schedule line is free for any change. |