How To Fix DDLS223 - CASE (&): Conversion function does not return a valid data type

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 223

• Message text: CASE (&): Conversion function does not return a valid data type

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS223 - CASE (&): Conversion function does not return a valid data type ?

  The SAP error message DDLS223 indicates that there is an issue with a conversion function in a Data Definition Language (DDL) statement, specifically that the function does not return a valid data type. This error typically occurs during the creation or modification of database objects, such as tables or views, when the system encounters a conversion function that is not properly defined or is incompatible with the expected data type.
  Causes:
  
  Invalid Conversion Function: The conversion function used in the DDL statement may not be valid or recognized by the SAP system.
  Data Type Mismatch: The data type being converted may not be compatible with the target data type.
  Syntax Errors: There may be syntax errors in the DDL statement that lead to the misinterpretation of the conversion function.
  Database Compatibility: The conversion function may not be supported by the underlying database system (e.g., HANA, Oracle, etc.) that SAP is using.
  
  Solutions:
  
  Check Conversion Function: Review the conversion function used in the DDL statement. Ensure that it is a valid function and that it is being used correctly.
  Verify Data Types: Ensure that the data types involved in the conversion are compatible. You may need to adjust the data types to ensure they match.
  Review Syntax: Check the syntax of the DDL statement for any errors. Make sure that all functions and parameters are correctly specified.
  Consult Documentation: Refer to the SAP documentation for the specific database you are using to ensure that the conversion function is supported and used correctly.
  Test in Isolation: If possible, isolate the conversion function and test it separately to see if it produces the expected results.
  Update SAP Notes: Check for any relevant SAP Notes or updates that may address this issue, as there may be patches or fixes available.
  
  Related Information:
  
  SAP Documentation: Review the official SAP documentation for DDL statements and conversion functions.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found.
  Database Documentation: If you are using a specific database (like HANA, Oracle, etc.), consult the documentation for that database regarding data type conversions.
  
  By following these steps, you should be able to identify the cause of the DDLS223 error and implement a solution to resolve it.