Diagnosis
You have made one or more manual changes for plant &V1& in theassignment list. An error was found when checking the entries.If an automatic date adjustment were carried out, the entries for thisplant would definitely cause an overlap.According to thesettings for multiple assignment, this is not permitted.

System Response
All manual entries for this plant are circled red. In this state, theassignments for this plant cannot be saved.

Procedure
Check all your manual changes, for example, the changes that you madein row &V2&. Enter assignment intervals that are consistent with otherassignments for this plant and that will not cause an overlap.