Message SAP /MAP/AD01075 - Planned assignment for &1 in row &2 must begin after date &3

Diagnosis
You want to process the date of a planned assignment for plant
V1<(><)>v1<(><)> in line v2<(><)>v2<(><)>. however, the date youhave chosen is not valid as it clashes with previously releasedassignments.

System Response
The assignment cannot be used with the date entered.

Procedure
Enter a later date than &V3& <(>&<)>V3<(>&<)>. This is the earliest datethat can be chosen without creating a conflict between previouslyreleased assignments.