How To Fix DDLS237 - CASE (WHEN): maximum data type cannot be determined (&,&) (&,&)

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 237

• Message text: CASE (WHEN): maximum data type cannot be determined (&,&) (&,&)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS237 - CASE (WHEN): maximum data type cannot be determined (&,&) (&,&) ?

  The SAP error message DDLS237 indicates that there is an issue with the SQL statement, specifically related to the CASE statement in your ABAP code or SQL query. The error message suggests that the maximum data type cannot be determined for the CASE expression, which typically occurs when the data types of the different branches of the CASE statement are incompatible or ambiguous.
  
  Cause:
  
  Inconsistent Data Types: The branches of the CASE statement return different data types, and SAP cannot determine a common data type for the entire expression.
  NULL Values: If any of the branches can return a NULL value, it may lead to ambiguity in determining the data type.
  Complex Expressions: If the expressions used in the CASE statement are complex or involve different data types, it can lead to this error.
  
  
  Solution:
  
  
  Ensure Consistent Data Types: Make sure that all branches of the CASE statement return values of the same data type. If