How To Fix ESH_CDS_VAL020 - Field &1 of view &2 derived from &3 which involves an HAVING CLAUSE

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_CDS_VAL -

• Message number: 020

• Message text: Field &1 of view &2 derived from &3 which involves an HAVING CLAUSE

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_CDS_VAL020 - Field &1 of view &2 derived from &3 which involves an HAVING CLAUSE ?

  The SAP error message ESH_CDS_VAL020 typically indicates an issue with a Core Data Services (CDS) view that involves a HAVING clause. This error can occur when the fields specified in the HAVING clause are not properly aggregated or when there is a mismatch in the expected data types or values.
  Cause:
  
  Improper Aggregation: The fields used in the HAVING clause must be aggregated properly. If you are trying to filter on a non-aggregated field, it will lead to this error.
  Field Mismatch: The fields referenced in the HAVING clause may not exist in the context of the aggregation or may not be compatible with the aggregation functions used.
  Incorrect Syntax: There may be a syntax error in the CDS view definition, particularly in how the HAVING clause is structured.
  Data Type Issues: The data types of the fields used in the HAVING clause may not match the expected types, leading to validation errors.
  
  Solution:
  
  
  Check Aggregation: Ensure that all fields in the HAVING clause are either aggregated or are part of the GROUP BY clause. If you are filtering on a field, it should be included in the aggregation.
  Example:
  GROUP BY field1, field2
  HAVING SUM(field3) > 100
  
  
  Review Field Names: Verify that the field names used in the HAVING clause are correct and exist in the context of the CDS view. Ensure that they are spelled correctly and are accessible.
  
  
  Validate Syntax: Review the syntax of the CDS view definition. Make sure that the HAVING clause is correctly placed after the GROUP BY clause and follows the correct SQL syntax.
  
  
  Data Type Compatibility: Check the data types of the fields used in the HAVING clause. Ensure that they are compatible with the operations being performed (e.g., comparing numeric fields with numeric values).
  
  
  Testing: If possible, test the query in a simpler form to isolate the issue. Start with a basic SELECT statement and gradually add complexity until the error reappears.
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for Core Data Services (CDS) to understand the correct usage of HAVING clauses and aggregation.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  Debugging Tools: Use debugging tools available in the SAP environment to trace the execution of the CDS view and identify where the error occurs.
  
  By following these steps, you should be able to identify and resolve the issue causing the ESH_CDS_VAL020 error in your SAP environment.