How To Fix WW022 - Hierarchy material & already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: WW - Material group master maintenance

• Message number: 022

• Message text: Hierarchy material & already exists

What causes this issue?

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

System Response

How to fix this error?

Enter a new key term.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WW022 - Hierarchy material & already exists ?

  The SAP error message WW022 ("Hierarchy material & already exists") typically occurs when you are trying to create or modify a hierarchy in the SAP system, and the system detects that a hierarchy material with the same identifier already exists. This can happen in various contexts, such as when working with material master data, bill of materials (BOM), or other hierarchical structures.
  Cause:
  
  Duplicate Entry: The most common cause is that you are attempting to create a new hierarchy material that has the same identifier (e.g., material number) as an existing one.
  Incorrect Data Entry: There may be a typographical error in the material number you are trying to enter.
  System Configuration: The system may have specific settings or configurations that prevent the creation of duplicate hierarchy materials.
  
  Solution:
  
  
  Check Existing Hierarchy Materials: Before creating a new hierarchy material, check the existing materials in the system to ensure that you are not duplicating an existing entry. You can do this by using transaction codes like MM03 (Display Material) or using the relevant reports.
  
  
  Use a Unique Identifier: If you need to create a new hierarchy material, ensure that you are using a unique identifier that does not conflict with existing materials.
  
  
  Modify Existing Material: If the hierarchy material you are trying to create is indeed needed, consider modifying the existing material instead of creating a new one.
  
  
  Consult Documentation: Review the SAP documentation or help files related to hierarchy materials to understand the specific requirements and constraints.
  
  
  Check User Authorizations: Ensure that you have the necessary authorizations to create or modify hierarchy materials in the system.
  
  
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting SAP Notes for any known issues or patches related to this error.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM01 (Create Material), MM02 (Change Material), and MM03 (Display Material).
  SAP Notes: Search for SAP Notes related to error WW022 for any specific fixes or updates provided by SAP.
  Material Master Data: Understanding the structure and management of material master data in SAP can help prevent such errors in the future.
  Hierarchy Management: Familiarize yourself with how hierarchies are managed in SAP, including the creation and maintenance of hierarchical structures.
  
  By following these steps, you should be able to identify the cause of the WW022 error and implement a suitable solution.