SAP Message REMPT200 - Material &1 &2 is blocked for single-item planning by user &3

Diagnosis
Single-item planning is currently blocked for material <(>&<)>V1<(>&<)>in plant <(>&<)>V2<(>&<)> by user <(>&<)>V3<(>&<)>.

Procedure
Try to carry out single-item planning for the material again later.