How To Fix RSRTS_CDS085 - Identifier &1 (exception aggregation of pos &2) occurs multiple times

SAP Error Message - Details

• Message type: E = Error

• Message class: RSRTS_CDS - Messages Transient CDS Queries

• Message number: 085

• Message text: Identifier &1 (exception aggregation of pos &2) occurs multiple times

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSRTS_CDS085 - Identifier &1 (exception aggregation of pos &2) occurs multiple times ?

  The SAP error message RSRTS_CDS085 typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA when dealing with Composite Data Sources (CDS) views and their aggregation. This error indicates that the identifier specified (in this case, &1) is causing an issue because it appears multiple times in the context of the aggregation of the specified position (&2).
  Cause:
  
  Duplicate Identifiers: The error is often caused by having duplicate identifiers in the data being processed. This can happen if the data model or the query is not designed to handle multiple occurrences of the same identifier correctly.
  Aggregation Issues: The aggregation logic defined in the CDS view or the query may not be able to handle the duplicates, leading to confusion in how to aggregate the data.
  Data Model Design: The underlying data model may not be properly normalized or may have issues that lead to duplicate entries.
  
  Solution:
  
  Check Data Model: Review the data model to ensure that it is designed correctly. Look for any duplicate entries in the underlying tables or views that could be causing the issue.
  Modify Aggregation Logic: If possible, adjust the aggregation logic in the CDS view or the query to handle duplicates appropriately. This may involve changing the way data is grouped or aggregated.
  Use Distinct: If applicable, consider using a DISTINCT clause in your SQL query to eliminate duplicates before aggregation.
  Debugging: Use transaction codes like RSRT (Query Monitor) to analyze the query and see where the duplicates are coming from. You can also use transaction RSD1 to check the InfoObjects and their properties.
  Check for Filters: Ensure that any filters applied in the query are correctly set up to avoid pulling in duplicate records.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review the SAP BW and HANA documentation for best practices on designing data models and queries, especially regarding aggregation and handling duplicates.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues. They can provide insights or solutions based on their experiences.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with an SAP BW/HANA expert or reach out to SAP support for further assistance.