How To Fix WW112 - Material group & is already assigned to material group hierarchy level &

SAP Error Message - Details

• Message type: E = Error

• Message class: WW - Material group master maintenance

• Message number: 112

• Message text: Material group & is already assigned to material group hierarchy level &

What causes this issue?

Each material group can only be assigned one material group hierarchy
level.

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?

If you wish to change the assignment, first delete the old assignment
and then create a new one or, alternatively, change it using
reclassification functions ("Change").

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WW112 - Material group & is already assigned to material group hierarchy level & ?

  The SAP error message WW112 indicates that a material group is already assigned to a specific material group hierarchy level. This typically occurs when you attempt to assign a material group to a hierarchy level that it is already associated with, or when there is an attempt to create a duplicate assignment.
  Cause:
  
  Duplicate Assignment: The material group you are trying to assign is already linked to the specified hierarchy level.
  Hierarchy Structure: The material group hierarchy may have been set up incorrectly, leading to conflicts in assignments.
  Data Integrity Issues: There may be inconsistencies in the data that prevent the assignment from being processed.
  
  Solution:
  
  
  Check Existing Assignments: 
  
  Navigate to the material group hierarchy in SAP and verify if the material group is already assigned to the specified level.
  Use transaction codes like OMW1 (for material group hierarchy) to review the current assignments.
  
  
  
  Remove Duplicate Assignment:
  
  If the material group is indeed already assigned, you may need to remove the existing assignment before attempting to reassign it.
  Use the appropriate transaction to delete or modify the assignment.
  
  
  
  Review Hierarchy Structure:
  
  Ensure that the hierarchy structure is set up correctly and that there are no conflicts in the hierarchy levels.
  If necessary, consult with your SAP administrator or a functional consultant to review the hierarchy setup.
  
  
  
  Data Consistency Check:
  
  Run data consistency checks to ensure that there are no underlying issues with the material group or hierarchy data.
  Use transaction codes like SE11 to check the database tables related to material groups and hierarchies.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help files for more detailed information on material group hierarchies and their management.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as OMW1 (Maintain Material Group Hierarchy), MM01 (Create Material), and MM02 (Change Material).
  SAP Notes: Check SAP Notes for any known issues or patches related to material group hierarchies.
  User Roles and Authorizations: Ensure that you have the necessary permissions to make changes to material groups and hierarchies.
  
  If the issue persists after following these steps, it may be beneficial to reach out to your SAP support team for further assistance.