How To Fix WFCS109 - Invalid aggregation mode

SAP Error Message - Details

• Message type: E = Error

• Message class: WFCS - Message Class for Store Forecasting (Dev. Package WFCS)

• Message number: 109

• Message text: Invalid aggregation mode

What causes this issue?

During the replenishment run, the system attempted to read the forecast
data in aggregated form. When doing this, the forecast results can be
read in varying degrees. The system reads the forecast data from the
database within the time interval given by replenishment, which is
calculated from the replenishment lead time and replenishment horizon,
subsequently known as a time interval. The forecast data is then
transferred to replenishment in aggregated form as forecast
requirements. Aggregation can take place in varying degrees of detail:
Aggregation of the whole period: the system aggregates and reads all
forecast values for a forecast period that fall within the time
interval. The forecast values for a forecast period that are cut off by
the beginning or the end of the time interval are included entirely in
the forecast requirements.
Proportional aggregation of the outlying forecast periods and complete
aggregation of the whole periods within the time interval: all forecast
requirements belonging to forecast periods that lie entirely within the
time interval are added completely to the forecast requirements. The
first and last forecast periods that do not necessarily lie completely
within the time interval are added proportionately.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Example of proportional forecast requirements:
The time interval for replenishment covers five forecast periods that
are a week long. The beginning of the time interval falls on the
Thursday of the first forecast period and the end of the time interval
falls on a Wednesday. The system adds the entire forecast values for
the three middle periods to the forecast requirements. Four sevenths of
the forecast value for the first period and three sevenths for the last
period are added to the forecast requirements.

System Response

The system is unable to calculate a forecast requirement for the
replenishment.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.