Diagnosis
You want to maintain the planning hierarchy for planning step <(>&<)>V1
<(>&<)>/<(>&<)>V2<(>&<)>.
Neither "Manual planning" nor "Automatic planning" were selected as theplanning step method for this planning method.
You cannot, therefore, maintain a planning hierarchy which is based onplan characteristics for a planning step.

Procedure
Check your entries or change the settings for your planning step. zumPlanungsschritt ab.