How To Fix WXP451 - Planning hierarchy is not defined for this planning step

SAP Error Message - Details

• Message type: E = Error

• Message class: WXP - Retail Planning

• Message number: 451

• Message text: Planning hierarchy is not defined for this planning step

What causes this issue?

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

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check your entries or change the settings for your planning step. zum
Planungsschritt ab.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WXP451 - Planning hierarchy is not defined for this planning step ?

  Certainly! Here's a detailed explanation for the SAP error message WXP451: "Planning hierarchy is not defined for this planning step":
  
  Error Message:
  WXP451 - Planning hierarchy is not defined for this planning step
  
  
  Cause:
  This error occurs when you try to execute a planning step in SAP APO (Advanced Planning and Optimization) or SAP SCM (Supply Chain Management), but the system cannot find a planning hierarchy assigned to that particular planning step.
  
  In SAP APO, planning steps are part of the Demand Planning (DP) or Supply Network Planning (SNP) process.
  Each planning step requires a planning hierarchy to define the structure of the data aggregation and disaggregation.
  If the planning hierarchy is not assigned or incorrectly assigned to the planning step, the system throws this error.
  
  
  Where it occurs:
  
  During execution of planning steps in Demand Planning (DP) or Supply Network Planning (SNP).
  When running macros or planning sequences that rely on a defined planning hierarchy.
  In transaction /SAPAPO/SDP94 (Demand Planning: