How To Fix CNV_MBT890 - Package & is not to be modified due to Namespace settings

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 890

• Message text: Package & is not to be modified due to Namespace settings

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT890 - Package & is not to be modified due to Namespace settings ?

  The SAP error message "CNV_MBT890 Package & is not to be modified due to Namespace settings" typically occurs during the execution of a conversion or migration process in SAP, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the package you are trying to modify is protected due to its namespace settings.
  Cause:
  
  Namespace Restrictions: In SAP, certain packages are designated as "customer namespaces" (usually starting with "Z" or "Y") or "SAP namespaces" (like "SAP", "SAP_BC", etc.). Modifications to SAP namespaces are restricted to prevent unintended changes to standard SAP objects.
  Package Ownership: The package you are trying to modify may belong to a namespace that is not allowed for modification, either because it is a standard SAP package or it is locked for other reasons.
  Transport Layer Settings: The transport layer settings may also restrict modifications to certain packages.
  
  Solution:
  
  Check Package Namespace: Verify the namespace of the package you are trying to modify. If it is an SAP namespace, you will not be able to modify it directly.
  Use a Custom Package: If you need to make modifications, consider creating a custom package in your own namespace (e.g., starting with "Z" or "Y") and implement your changes there.
  Review Authorization: Ensure that you have the necessary authorizations to make changes to the package. If you are not authorized, contact your SAP Basis or security team.
  Consult Documentation: Review the documentation for the specific migration or conversion process you are using to ensure you are following the correct procedures.
  Contact SAP Support: If you believe the error is occurring inappropriately or if you need further assistance, consider reaching out to SAP Support for guidance.
  
  Related Information:
  
  Namespace Management: Understanding how namespaces work in SAP can help you avoid similar issues in the future. SAP namespaces are designed to protect standard objects from being modified by customers.
  Transport Management System (TMS): Familiarize yourself with TMS settings, as they can affect how packages are handled and modified.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context or solutions.
  
  By following these steps, you should be able to resolve the error and proceed with your migration or conversion tasks.