How To Fix LTR2_DS_CHG_TECHSEL028 - Failed to convert expressions to a vaild where clause

SAP Error Message - Details

• Message type: E = Error

• Message class: LTR2_DS_CHG_TECHSEL - Change log messages of data set Technical Selection

• Message number: 028

• Message text: Failed to convert expressions to a vaild where clause

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message LTR2_DS_CHG_TECHSEL028 - Failed to convert expressions to a vaild where clause ?

  The SAP error message LTR2_DS_CHG_TECHSEL028 indicates that there is a failure in converting expressions to a valid WHERE clause in a data selection or transformation process. This error typically arises in the context of data extraction, transformation, or loading (ETL) processes, particularly when using SAP Data Services or similar tools.
  Causes:
  
  Invalid Expressions: The expressions used in the WHERE clause may contain syntax errors or unsupported functions.
  Data Type Mismatch: There may be a mismatch between the data types of the fields being compared in the WHERE clause.
  Missing Fields: The fields referenced in the WHERE clause may not exist in the source or target data structure.
  Logical Errors: The logical conditions in the WHERE clause may be contradictory or not properly structured.
  Database Compatibility: The SQL syntax used may not be compatible with the underlying database.
  
  Solutions:
  
  Review Expressions: Check the expressions used in the WHERE clause for any syntax errors or unsupported functions. Ensure that they conform to the expected SQL syntax.
  Check Data Types: Verify that the data types of the fields being compared are compatible. If necessary, use type conversion functions to ensure compatibility.
  Validate Field Names: Ensure that all field names referenced in the WHERE clause exist in the source data structure and are spelled correctly.
  Simplify Conditions: If the WHERE clause is complex, try simplifying it to isolate the issue. Start with basic conditions and gradually add complexity.
  Test in SQL Environment: If possible, test the WHERE clause in a SQL environment (like a database query tool) to see if it executes without errors.
  Consult Documentation: Refer to SAP documentation or community forums for specific guidance related to the version of SAP Data Services you are using.
  
  Related Information:
  
  SAP Data Services Documentation: Check the official SAP documentation for Data Services for detailed information on writing valid SQL expressions and troubleshooting common errors.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  Error Logs: Review any error logs or detailed messages provided by SAP Data Services to get more context on the error.
  
  By following these steps, you should be able to identify and resolve the issue causing the error message LTR2_DS_CHG_TECHSEL028.