How To Fix /SAPAPO/OM_UPGRADE127 - Class & was not adjusted, since not unique in R/3 class system

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OM_UPGRADE -

• Message number: 127

• Message text: Class & was not adjusted, since not unique in R/3 class system

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OM_UPGRADE127 - Class & was not adjusted, since not unique in R/3 class system ?

  The SAP error message /SAPAPO/OM_UPGRADE127 Class & was not adjusted, since not unique in R/3 class system typically occurs during the upgrade or migration process of SAP Advanced Planning and Optimization (APO) systems. This error indicates that there is a problem with the classification of objects in the R/3 class system, specifically that the class in question is not unique.
  Cause:
  
  Non-Unique Class Names: The error arises when there are multiple classes with the same name in the R/3 system. SAP requires that class names be unique to ensure proper mapping and functionality during the upgrade process.
  Data Inconsistencies: There may be inconsistencies in the data or configuration settings between the APO and R/3 systems.
  Custom Developments: Custom classes or modifications in the R/3 system may lead to conflicts during the upgrade.
  
  Solution:
  
  
  Identify Duplicate Classes:
  
  Use transaction codes like CL02 (Change Class) or CL03 (Display Class) in the R/3 system to check for classes with the same name.
  You can also use the transaction SE11 to check the database table TCLAS for duplicate entries.
  
  
  
  Rename or Delete Duplicates:
  
  If you find duplicate classes, you may need to rename or delete the unnecessary ones to ensure that each class name is unique.
  Ensure that any changes made do not affect existing functionality or data integrity.
  
  
  
  Adjust Class Assignments:
  
  After resolving duplicates, ensure that all relevant objects are correctly assigned to the appropriate classes.
  
  
  
  Re-run the Upgrade:
  
  Once the duplicates are resolved, re-run the upgrade or migration process to see if the error persists.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  
  
  Testing:
  
  After making changes, conduct thorough testing to ensure that the system behaves as expected and that there are no further issues related to class assignments.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for APO and R/3 for detailed information on class management and upgrade processes.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have implemented.
  SAP Support: If the issue persists or if you are unsure about making changes, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to resolve the error and ensure a smooth upgrade process for your SAP APO system.