How To Fix WRF_BUDGET121 - Material class &1 is not assigned to the material group hierarchy

WRF_BUDGET121 - Overview

• Message type: E = Error

• Message class: WRF_BUDGET -

• Message number: 121

• Message text: Material class &1 is not assigned to the material group hierarchy

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WRF_BUDGET121 - Material class &1 is not assigned to the material group hierarchy ?

  The SAP error message:
  WRF_BUDGET121 Material class &1 is not assigned to the material group hierarchy
  
  
  Cause:
  This error occurs when the system tries to process a material whose material class is not assigned or linked to the relevant material group hierarchy in the budgeting or controlling module. Essentially, the material class (a classification of materials) must be mapped to a material group hierarchy used in budgeting or cost controlling processes. If this assignment is missing, the system cannot correctly categorize or process the material for budget-related functions, triggering this error.
  
  Explanation:
  
  Material Class: A classification attribute assigned to materials to group them logically.
  Material Group Hierarchy: A hierarchical structure used in budgeting, controlling, or reporting to group materials for cost or budget tracking.
  The error indicates a missing link between these two, which is required for budget-related transactions or reports.
  
  
  
  Solution:
  
  
  Check Material Class Assignment:
  
  Verify the material class (&1 in the message) that is causing the error.
  Use transaction