How can you prevent a goods movement from being posted to a reservation item if the requirement date is too far in the future?

To prevent a goods movement from being posted to a reservation item when the requirement date is too far in the future, leaving the Movement Allowed indicator blank is an effective approach. When this indicator is left blank, it effectively restricts the posting of any goods movement against the reservation. This means that any attempt to process a movement associated with that reservation will be denied, ensuring that only movements that align with the specified timeframe can occur.

By utilizing this method, organizations can maintain tighter control over their inventory movements and ensure that they only fulfill immediate or near-term requirements. This helps in avoiding potential overcommitting resources to requirements that are not imminent, thus managing inventory levels and planning processes more effectively.

The other options may involve different strategies for managing goods movement or reservations, but they do not provide the same direct control in preventing the posting when the requirement is too far out. For example, setting a maximum posting date may help manage timelines but does not completely block movements. Using a time restriction feature could also have broader implications that might allow some movements. Locking the material master record can hinder all transactions related to that material, which might not be desirable in all circumstances.