Message SAP WXP418 - First create &1 &2 under &3 &4

Diagnosis
You want to maintain or display the sub-tree for characteristic valueV2 for plan characteristic v1 in the planning hierarchy.
The nodes with characteristic value &V2& has not yet been entered inthe planning hierarchy below characteristic value &V4& for plancharacteristic &V3&.

Procedure
Enter characteristic value &V2& for plan characteristic &V1& belowcharacteristic value &V4& for plan characteristic &V3&.