How To Fix LOBM_ODATA_MSG034 - Batch &1 for material &2 already has class assigned

SAP Error Message - Details

• Message type: E = Error

• Message class: LOBM_ODATA_MSG - Batch Management: Common messages (not only OData)

• Message number: 034

• Message text: Batch &1 for material &2 already has class assigned

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 LOBM_ODATA_MSG034 - Batch &1 for material &2 already has class assigned ?

  The SAP error message LOBM_ODATA_MSG034 indicates that there is an attempt to assign a class to a material that already has a class assigned to it. This typically occurs in the context of material management and classification in SAP.
  Cause:
  The error arises when:
  
  You are trying to assign a new classification to a material that already has an existing class assigned.
  The system does not allow multiple classes to be assigned to a single material in the same classification view.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Class Assignment:
  
  Use transaction code CL02 (Change Class) or CL03 (Display Class) to check the current class assigned to the material.
  Verify if the material already has a class assigned.
  
  
  
  Remove Existing Class:
  
  If you need to change the class, you will first need to remove the existing class assignment.
  Use transaction code MM02 (Change Material) to navigate to the classification view and remove the existing class.
  
  
  
  Reassign Class:
  
  After removing the existing class, you can then assign the new class to the material using the same transaction (MM02) or through the appropriate OData service if you are using an API.
  
  
  
  Check Authorization:
  
  Ensure that you have the necessary authorizations to change class assignments for materials.
  
  
  
  Consult Documentation:
  
  If you are using custom OData services, check the service documentation to ensure that the logic for class assignment is correctly implemented.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  MM02: Change Material
  CL02: Change Class
  CL03: Display Class
  
  
  Material Classification: Understand the classification system in SAP, which allows materials to be grouped based on shared characteristics.
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to class assignments and OData services.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the error and successfully manage class assignments for materials in SAP.