We are attempting to implement the Demand Planning module as part of our initial implementation and we are very disappointed.  The Demand Planning was critical in our decision to go with Net Suite.  The issues are so severe that it makes the DP impractical and has created a critical situation for our implementation.  Issues are as follows:

We have multiple locations and our plant is separate from our DC.

1.)  We are being told that you cannot calculate a demand plan with imported sales history.  This means that if you are a new implementation, you cannot use this feature for at least a year or more.  (This was never disclosed in the sales cycle)