How To Fix WW109 - No hierarchy allocation exists for material group &

SAP Error Message - Details

• Message type: E = Error

• Message class: WW - Material group master maintenance

• Message number: 109

• Message text: No hierarchy allocation exists for material group &

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WW109 - No hierarchy allocation exists for material group & ?

  The SAP error message WW109 "No hierarchy allocation exists for material group &" typically occurs in the context of SAP's Material Management (MM) or related modules when the system is unable to find a hierarchy allocation for a specified material group. This can happen during various processes, such as when trying to create or modify a material, or when running reports that require hierarchy data.
  Cause:
  
  
  Missing Hierarchy Allocation: The primary cause of this error is that there is no hierarchy defined for the specified material group in the system. This could be due to:
  
  The material group not being set up correctly in the system.
  The hierarchy structure not being maintained or activated for that material group.
  The material group being newly created without the necessary hierarchy allocations.
  
  
  
  Configuration Issues: There may be issues in the configuration settings related to material groups and their hierarchies.
  
  
  Data Inconsistencies: There could be inconsistencies in the master data or configuration that prevent the system from recognizing the hierarchy.
  
  
  Solution:
  
  
  Check Material Group Configuration:
  
  Go to the configuration settings in SAP (Transaction Code: SPRO).
  Navigate to the relevant section for material groups and check if the hierarchy is defined for the material group in question.
  
  
  
  Maintain Hierarchy:
  
  If the hierarchy is missing, you will need to create or maintain the hierarchy for the material group.
  Use the appropriate transaction (e.g., OMT3E for maintaining material group hierarchies) to set up the hierarchy.
  
  
  
  Verify Master Data:
  
  Check the material master data for the material group to ensure it is correctly assigned and that there are no discrepancies.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to material groups and hierarchies for additional guidance.
  
  
  
  User Authorization:
  
  Ensure that you have the necessary authorizations to view and modify the hierarchy settings.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  SPRO: Customizing settings.
  OMT3E: Maintain material group hierarchy.
  MM01/MM02: Create/Change Material Master.
  
  
  
  SAP Notes: Check for any SAP Notes related to this error message for potential patches or updates that may resolve the issue.
  
  
  Training and Documentation: Consider training sessions or documentation on material management and hierarchy structures in SAP to better understand how to manage these configurations.
  
  
  By following these steps, you should be able to identify the cause of the WW109 error and implement a solution to resolve it.