Schedule MRP
If you have a relative large number of items to plan it could take a while to run the MRP calculations in Microsoft Dynamics NAV, an hour to do a full calculation is not uncommon, especially if you have been using the system for a while. In order to not have the MRP calculations to interrupt with the daily operations (such as posting orders) you typically want the calculations to take place during the night. This is a very common requirement and in fact a lot of people I talk to are surprised that this is not something Dynamics NAV...