Diagnosis
You want to adjust the date (start date &V1& and end date &V2&) for theassignment in row &V3& for plant &V4&. This would cause conflicts withother assignments that exist for this plant, however.

System Response
The action will not be carried out for this row and the dates will bereset.

Procedure
Change the date for this row manually. Be aware of possible time periodconflicts with other assignments for the plant, however.