How To Fix DDLS288 - Only columns or NULL possible for case join return element

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 288

• Message text: Only columns or NULL possible for case join return element

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS288 - Only columns or NULL possible for case join return element ?

  The SAP error message DDLS288 ("Only columns or NULL possible for case join return element") typically occurs in the context of ABAP Dictionary or when working with SQL statements in ABAP programs. This error indicates that there is an issue with the way a CASE statement is being used in a SQL query, particularly in relation to the return elements of a CASE join.
  
  Cause:
  The error arises when a CASE statement is used in a way that does not conform to the expected syntax or logic. Specifically, it indicates that the CASE statement is trying to return values that are not valid columns or NULL. This can happen if:
  
  The CASE statement is attempting to return a non-column value or an expression that is not valid in the context of the SQL query.
  The CASE statement is improperly structured, leading to ambiguity in the return values.
  
  
  Solution:
  To resolve the DDLS288 error, you can take