How To Fix OH001 - Hierarchy maintenance is not supported for class &

SAP Error Message - Details

• Message type: E = Error

• Message class: OH - Messages Group Maintenance

• Message number: 001

• Message text: Hierarchy maintenance is not supported for class &

What causes this issue?

You called up a function for hierarchy maintenance with class &V1&.
However, hierarchy maintenance is not supported for this class.

How to fix this error?

Use only class 0000 or the <DS:TX.GRP_GROUP_CLASSES>CO classes</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OH001 - Hierarchy maintenance is not supported for class & ?

  The SAP error message OH001, which states "Hierarchy maintenance is not supported for class &," typically occurs when you are trying to maintain a hierarchy for a class that does not support it. This can happen in the context of SAP's classification system, particularly when dealing with characteristics and classes in the SAP Material Management (MM) or Product Lifecycle Management (PLM) modules.
  Cause:
  
  Class Type: The class you are trying to maintain may not be configured to support hierarchy maintenance. In SAP, not all class types allow for hierarchical structures.
  Configuration Settings: The class type may not have the necessary settings enabled for hierarchy maintenance.
  Incorrect Class Assignment: You may be trying to assign a hierarchy to a class that is not intended for that purpose.
  
  Solution:
  
  
  Check Class Type: Verify the class type you are using. You can do this by navigating to the class in the SAP system and checking its properties. Ensure that it is a class type that supports hierarchy maintenance (e.g., class type 001 for material).
  
  
  Review Class Configuration: If you have access to the configuration settings, check the settings for the class type in transaction code CL02 (Change Class). Ensure that the hierarchy maintenance option is enabled.
  
  
  Use a Different Class: If the class type you are using does not support hierarchy maintenance, consider using a different class type that does.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific details on class types and their capabilities regarding hierarchy maintenance.
  
  
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support or your internal SAP support team for further assistance.
  
  
  Related Information:
  
  Transaction Codes: 
  
  CL01 - Create Class
  CL02 - Change Class
  CL03 - Display Class
  
  
  Class Types: Familiarize yourself with the different class types in SAP and their functionalities. Common class types include:
  
  001: Material
  002: Equipment
  003: Functional Location
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  By following these steps, you should be able to identify the cause of the OH001 error and implement a suitable solution.