How To Fix R7B407 - Multiple usage of generated namespace &1 is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: R7B - BW Metadata (InfoCube, InfoObject, InfoObject catalog)

• Message number: 407

• Message text: Multiple usage of generated namespace &1 is not allowed

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 R7B407 - Multiple usage of generated namespace &1 is not allowed ?

  The SAP error message R7B407, which states "Multiple usage of generated namespace &1 is not allowed," typically occurs in the context of SAP Business Warehouse (BW) or SAP HANA when there is an issue with the namespace used for generated objects, such as InfoObjects, DataSources, or other BW-related artifacts.
  Cause:
  The error is usually caused by one of the following reasons:
  
  
  Namespace Conflict: The namespace (identified by &1 in the error message) has already been used for another object in the system. In SAP BW, namespaces are used to uniquely identify objects, and reusing a namespace can lead to conflicts.
  
  
  Improper Object Generation: If you are trying to generate objects (like InfoObjects or DataSources) that have the same namespace as existing objects, the system will throw this error to prevent conflicts.
  
  
  Transport Issues: If objects were transported from one system to another and the namespaces were not properly managed, it could lead to this error.
  
  
  Solution:
  To resolve the R7B407 error, you can take the following steps:
  
  
  Check Existing Objects: Verify if there are existing objects in the system that are using the same namespace. You can do this by using transaction codes like SE11 (Data Dictionary) or SE80 (Object Navigator) to search for objects with the same namespace.
  
  
  Rename or Change Namespace: If you find that the namespace is already in use, consider renaming the new object or changing its namespace to avoid the conflict. This can be done in the object definition or during the generation process.
  
  
  Delete Unused Objects: If there are old or unused objects that are occupying the namespace, consider deleting them if they are no longer needed. Be cautious with this approach, as it may affect other parts of your system.
  
  
  Review Transport Requests: If the issue arose after a transport, review the transport requests to ensure that they did not inadvertently create conflicts with existing objects.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to namespace management in BW or HANA for additional guidance.
  
  
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance.
  
  
  Related Information:
  
  Namespaces in SAP: Understanding how namespaces work in SAP can help prevent such issues in the future. Each object in SAP can be assigned a namespace to ensure uniqueness.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Best Practices: Follow best practices for naming conventions and object management in SAP BW to minimize the risk of namespace conflicts.
  
  By following these steps, you should be able to resolve the R7B407 error and prevent it from occurring in the future.