| | Possible valuesFrozen 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.
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