How To Fix RSRTS_CDS013 - ELSE clause (of case statement) must contain NULL value

SAP Error Message - Details

• Message type: E = Error

• Message class: RSRTS_CDS - Messages Transient CDS Queries

• Message number: 013

• Message text: ELSE clause (of case statement) must contain NULL value

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSRTS_CDS013 - ELSE clause (of case statement) must contain NULL value ?

  The SAP error message RSRTS_CDS013 indicates that there is an issue with the ELSE clause of a CASE statement in a Core Data Services (CDS) view or a calculation view. Specifically, the error states that the ELSE clause must contain a NULL value. This typically occurs when the ELSE clause is not properly defined to handle cases where none of the WHEN conditions are met.
  Cause:
  The error arises when the ELSE clause of a CASE statement is expected to return a NULL value, but it either returns a non-NULL value or is not defined at all. This can happen in scenarios where:
  
  The CASE statement is used to derive a value based on certain conditions, and if none of those conditions are met, the ELSE clause should logically return NULL.
  The ELSE clause is incorrectly defined or omitted, leading to ambiguity in the expected output.
  
  Solution:
  To resolve the error, you should ensure that the ELSE clause of your CASE statement is explicitly defined to return a NULL value. Here’s how you can do that:
  
  
  Check the CASE Statement: Review the CASE statement in your CDS view or calculation view. Ensure that the ELSE clause is present and returns NULL.
  Example of a correct CASE statement:
  CASE 
      WHEN condition1 THEN value1
      WHEN condition2 THEN value2
      ELSE NULL  -- Ensure this is explicitly defined
  END
  
  
  Modify the ELSE Clause: If the ELSE clause is returning a non-NULL value or is missing, modify it to return NULL.
  
  
  Test the Changes: After making the changes, test the CDS view or calculation view to ensure that the error is resolved and that the output is as expected.
  
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) are a way to define semantic data models in SAP. They allow for the creation of complex data models that can be consumed by various SAP applications.
  CASE Statement: The CASE statement is a conditional expression that allows you to perform conditional logic in SQL-like queries. It evaluates conditions in order and returns the corresponding value for the first true condition.
  NULL Handling: In SQL and CDS, NULL represents the absence of a value. Proper handling of NULL values is crucial for data integrity and accurate reporting.
  
  If you continue to experience issues after making these changes, consider checking the documentation for your specific SAP version or consulting with your SAP support team for further assistance.