How To Fix LD407 - Sort buffers can only be defined on the first level of the hierarchy

SAP Error Message - Details

• Message type: E = Error

• Message class: LD - Logistics Automotive Line Design

• Message number: 407

• Message text: Sort buffers can only be defined on the first level of the hierarchy

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message LD407 - Sort buffers can only be defined on the first level of the hierarchy ?

  The SAP error message LD407: Sort buffers can only be defined on the first level of the hierarchy typically occurs in the context of SAP BW (Business Warehouse) or SAP BW/4HANA when dealing with data loading or transformation processes. This error indicates that there is an issue with how sort buffers are defined in the hierarchy levels of your data model.
  Cause:
  The error arises when you attempt to define sort buffers for a hierarchy level that is not the first level. In SAP BW, sort buffers are used to optimize the sorting of data during loading or processing. However, these buffers can only be applied to the top level of a hierarchy, as lower levels do not have the same sorting requirements or structure.
  Solution:
  To resolve the LD407 error, you can take the following steps:
  
  
  Check Hierarchy Definition: Review the hierarchy structure in your InfoObject or data model. Ensure that sort buffers are only defined for the first level of the hierarchy.
  
  
  Remove Sort Buffers from Lower Levels: If you have mistakenly defined sort buffers for any levels other than the first, remove those definitions. You can do this in the hierarchy maintenance screen.
  
  
  Revalidate the Hierarchy: After making changes, revalidate the hierarchy to ensure that it is correctly set up without any sort buffers on lower levels.
  
  
  Test the Data Load: Once the adjustments are made, attempt to run the data load or transformation process again to see if the error persists.
  
  
  Consult Documentation: If you are unsure about the hierarchy structure or sort buffer definitions, refer to the SAP documentation or help resources for guidance on best practices.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might provide additional insights or updates regarding this error.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  BW Modeling Tools: Familiarize yourself with the BW Modeling Tools in SAP HANA Studio or Eclipse, as they provide a user-friendly interface for managing hierarchies and data models.
  
  By following these steps, you should be able to resolve the LD407 error and ensure that your hierarchy is correctly configured for data processing in SAP BW.