SAP Message RSPLF347 - Forecast period does not fall within F4 time interval

Diagnosis
You have entered a forecast period that does not fall within the F4 timeinterval. The system cannot determine all the times (periods) in theforecast period.
The F4 time interval restricts the master data of all timecharacteristics.

Procedure
You set the F4 time interval in transaction RSRHIERARCHYVIRT. Increasethis time interval so that the system can determine all times within theforecast period.