Look Behind

Enter the number of manufacturing days into the past that you wish the system to check for consumption forecasts. See the help topic for the Forecast Look Behind field that appears on the Planning Parameters form for more information.

Caution: 
If the Use Co or Forecast parameter is set to Both, and you change either this parameter or the Look Ahead parameter values, the system may reevaluate forecast consumption for all items, and this process may take a long time.