Diagnosis
For forecasting using a day period pattern, you need to maintain thefactory calendar in the master data for the plant. The system wasunable to determine the factory calendar for the material/plantcombination in question during the forecast run.

System Response
The system cannot carry out the forecast on a daily basis for thematerials for the plant.

Procedure
Maintain the factory calendar in the master data for the plant andmaintain the factory calendar in the Customizing settings.