SAP Message WU834 - MC & created as discount in other promotion(s) for the sales period

Diagnosis
A discount was already created in one or more promotions for thematerial group &V1& for the selling period that was entered. However,only one promotion discount is valid for one condition type in theoverlapping periods.

System Response
INCLUDE ISR_STOP

Procedure
If necessary, check the periods for the promotions concerned.