How To Fix RSRTS_CDS017 - Case statement must have exactly one when clause

SAP Error Message - Details

• Message type: E = Error

• Message class: RSRTS_CDS - Messages Transient CDS Queries

• Message number: 017

• Message text: Case statement must have exactly one when clause

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSRTS_CDS017 - Case statement must have exactly one when clause ?

  The SAP error message RSRTS_CDS017 indicates that there is an issue with a CASE statement in a calculation view or a query where the CASE statement is not properly structured. Specifically, the error states that the CASE statement must have exactly one WHEN clause, which means that the syntax of the CASE statement is incorrect.
  Cause:
  The error typically arises from one of the following scenarios:
  
  Incorrect Syntax: The CASE statement is either missing a WHEN clause or has multiple WHEN clauses that are not structured correctly.
  Logical Errors: The logic of the CASE statement may be flawed, leading to ambiguity in how the conditions are evaluated.
  Improper Use of CASE: The CASE statement may be used in a context where it is not allowed or expected.
  
  Solution:
  To resolve the RSRTS_CDS017 error, you can follow these steps:
  
  
  Review the CASE Statement: Check the syntax of your CASE statement. Ensure that it has the correct structure:
  CASE 
      WHEN condition1 THEN result1
      ELSE result2
  END
  Make sure there is exactly one WHEN clause and optionally an ELSE clause.
  
  
  Simplify the Logic: If you have multiple conditions that need to be evaluated, consider restructuring your CASE statement or using nested CASE statements if necessary.
  
  
  Test the Query: After making changes, test the query or calculation view to ensure that it executes without errors.
  
  
  Check Documentation: Refer to the SAP documentation for the specific version you are using to ensure that you are following the correct syntax and guidelines for CASE statements.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and how they resolved them.
  Debugging Tools: Use debugging tools available in SAP HANA Studio or SAP Web IDE to step through your query and identify where the error occurs.
  
  By following these steps, you should be able to identify and correct the issue causing the RSRTS_CDS017 error in your SAP environment.