SAP Message WXP144 - Hierarchy table &1 could not be deleted

Diagnosis
You have changed or enhanced the arrangement of planning levels. As aresult, hierarchy table &V1& for saving proportional factors usingplanning hierarchies has to be generated again by the system.Proportional factors have already been created in this table and theymust be deleted so that the scenario can be deleted.
Deletion could not be executed successfully!

System Response
The planning scenario could not be activated.

Procedure
Delete hierarchy table &V1& using the SAP Data Dictionary.

Procedure for System Administration
The hierarchy table for Merchandise & Assortment Controlling aregenerated DDIC tables that can be processed (with restrictions) usingthe Data Dictionary. If it is not possible to activate a planningscenario, it is possible to delete the entries that already exist inhierarchy table &V1& or the entire table via the Data Dictionary.