SAP Message WFCS221 - Process for plant &1 was started (time stamp: &2)

Diagnosis
The system uses the programm in parallel processing mode. The programhas started a new process for the forecast run.
Technically, this means that a free process becomes occupied and thesystem uses it to process a processing unit for the forecast (thismeans that the forecast results are calculated in one process for allthe materials for a plant).
In the application log for the forecast (transaction WFCSL01), you cansee the list of processes started in an entire forecast run.