How To Fix /SAPAPO/OM_UPGRADE152 - Class & in client & is in a namespace reserved for SAP

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OM_UPGRADE -

• Message number: 152

• Message text: Class & in client & is in a namespace reserved for SAP

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OM_UPGRADE152 - Class & in client & is in a namespace reserved for SAP ?

  The error message /SAPAPO/OM_UPGRADE152 typically indicates an issue related to the upgrade of SAP Advanced Planning and Optimization (APO) components. This specific error suggests that there is a class in the client that is in a namespace reserved for SAP, which is not allowed.
  Cause:
  
  Custom Development: The error usually arises when a custom class or object is created in a namespace that is reserved for SAP (e.g., /SAP/). SAP reserves certain namespaces for its own development, and any custom development should be done in a customer namespace (e.g., /Z or /Y).
  Upgrade Issues: This error can also occur during an upgrade process if there are remnants of custom objects that conflict with SAP's reserved namespaces.
  Transport Issues: If a transport request containing custom objects was incorrectly configured or imported, it might lead to this error.
  
  Solution:
  
  Identify the Class: Use transaction SE80 or SE11 to identify the specific class that is causing the issue. Look for classes in the /SAPAPO/ namespace that should not be there.
  Rename or Delete: If you find a custom class in the reserved namespace, you will need to either rename it to a valid customer namespace (e.g., /Z or /Y) or delete it if it is not needed.
  Check Transport Requests: Review any recent transport requests to ensure that they do not contain objects in the reserved namespace. If they do, you may need to adjust them accordingly.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide guidance on how to resolve it.
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to SAP Support for assistance, especially if this error is occurring during an upgrade.
  
  Related Information:
  
  Namespaces: SAP reserves certain namespaces for its own development. Custom developments should always be done in customer namespaces to avoid conflicts.
  Upgrade Documentation: Review the upgrade documentation provided by SAP for any specific instructions or considerations regarding custom developments.
  Development Guidelines: Follow SAP's development guidelines to ensure that custom objects are created in the appropriate namespaces and do not conflict with SAP's reserved objects.
  
  By following these steps, you should be able to resolve the /SAPAPO/OM_UPGRADE152 error and ensure that your SAP system is functioning correctly.