How To Fix BWOM2011 - Report row hierarchy header is not unique ->

SAP Error Message - Details

• Message type: E = Error

• Message class: BWOM2 - BW CO-OM: Delta Method For Data Extraction

• Message number: 011

• Message text: Report row hierarchy header is not unique ->

Symptom
A consistent header could not be found while attempting to build report
row hierarchy &V1& from Customizing defined via transaction BWOM01.
A hierarchy must only contain one report row for which the <LS>Totals
Row</> field is not filled.
This row is the header row of the report row hierarchy.
The report row hierarchy that you defined not only contains row &V2&
but at least one other row for which the <LS>Totals Row</> is initial.
Error correction
Use transaction BWOM01 to make corrections to Customizing for the
report row hierarchy.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BWOM2011 - Report row hierarchy header is not unique -> ?

  The SAP error message BWOM2011, which states "Report row hierarchy header is not unique," typically occurs in SAP Business Warehouse (BW) when there is an issue with the hierarchy structure of a report. This error indicates that there are duplicate entries in the hierarchy that are causing confusion in the report generation process.
  Cause:
  
  Duplicate Hierarchy Nodes: The most common cause of this error is that there are multiple nodes in the hierarchy that have the same name or identifier. This can happen if the hierarchy was not properly maintained or if there were changes made to the hierarchy structure without ensuring uniqueness.
  Incorrect Data Model: If the underlying data model has inconsistencies or if there are issues with the way the data is structured, it can lead to this error.
  Report Configuration: The configuration of the report itself may not be set up correctly, leading to conflicts in how the hierarchy is interpreted.
  
  Solution:
  
  Check Hierarchy Structure: Review the hierarchy structure in the BW model. Ensure that all nodes have unique names or identifiers. You can do this by navigating to the hierarchy maintenance transaction (e.g., RSH1 for InfoObjects) and checking for duplicates.
  Adjust Report Settings: If the report is configured to use a specific hierarchy, ensure that the settings are correct and that the hierarchy being used does not contain duplicates.
  Data Consistency Check: Run consistency checks on the data model to identify any inconsistencies that may be causing the issue. This can often be done through transaction codes like RSA1 (Data Warehousing Workbench).
  Rebuild Hierarchy: If necessary, consider rebuilding the hierarchy from scratch to ensure that it is correctly structured and free of duplicates.
  Consult Documentation: Refer to SAP documentation or support notes related to this error for additional troubleshooting steps or updates that may address the issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench), RSH1 (Hierarchy Maintenance), and others that may help in diagnosing and fixing the issue.
  User Forums: Consider visiting SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and resolve the cause of the BWOM2011 error in your SAP BW environment.