How To Fix ESH_CDS_VAL010 - Field &1 of view &2 derived from &3 which involves an DISTINCT(SELECT)

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_CDS_VAL -

• Message number: 010

• Message text: Field &1 of view &2 derived from &3 which involves an DISTINCT(SELECT)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_CDS_VAL010 - Field &1 of view &2 derived from &3 which involves an DISTINCT(SELECT) ?

  The SAP error message ESH_CDS_VAL010 typically indicates an issue related to the use of a DISTINCT clause in a Core Data Services (CDS) view. This error can occur when the system encounters a problem with the way the data is being selected or aggregated in the CDS view.
  Cause:
  
  Incorrect Use of DISTINCT: The error often arises when the DISTINCT keyword is used in a way that is not compatible with the underlying data model or the structure of the CDS view.
  Aggregation Issues: If the CDS view is trying to aggregate data but also uses DISTINCT, it can lead to conflicts, especially if the fields being selected are not properly grouped.
  Field Mismatch: The field specified in the error message may not be compatible with the data being retrieved or may not exist in the context of the query.
  
  Solution:
  
  Review the CDS View Definition: Check the definition of the CDS view to ensure that the use of DISTINCT is appropriate. If you are aggregating data, consider whether DISTINCT is necessary.
  Adjust the Query: If you are using DISTINCT in a subquery or a derived table, ensure that the fields being selected are correctly defined and that the query logic is sound.
  Check Field Compatibility: Ensure that the fields being selected in the CDS view are compatible with the data types and structures of the underlying tables or views.
  Remove DISTINCT if Unnecessary: If the use of DISTINCT is not required for your use case, consider removing it to simplify the query.
  Test with Simplified Queries: If possible, simplify the query to isolate the issue. Start with a basic selection and gradually add complexity to identify where the error occurs.
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) are a way to define semantic data models in SAP. They allow for the definition of views that can be consumed by various applications.
  SAP HANA: If you are using SAP HANA as your database, be aware of its specific SQL syntax and behavior, especially regarding aggregation and distinct selections.
  SAP Notes and Documentation: Check SAP Notes for any known issues or updates related to the error message. The SAP Help Portal may also provide additional guidance on CDS views and their usage.
  
  If the problem persists after trying the above solutions, consider reaching out to your SAP support team or consulting the SAP Community for further assistance.