How To Fix GT142 - User-defined conversion:

SAP Error Message - Details

• Message type: E = Error

• Message class: GT - Database utilities

• Message number: 142

• Message text: User-defined conversion:

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message GT142 - User-defined conversion: ?

  The SAP error message GT142, which indicates a "User-defined conversion" issue, typically arises when there is a problem with data type conversion in the context of a custom program or user-defined function. This error can occur in various scenarios, such as when data is being transferred between different systems, or when custom ABAP code is executed that involves type conversions.
  Causes of GT142 Error
  
  
  Data Type Mismatch: The most common cause is a mismatch between the expected data type and the actual data type being processed. For example, trying to assign a string to a numeric field without proper conversion.
  
  
  Custom Code Issues: If there are user-defined functions or custom ABAP code that perform conversions, errors in the logic or incorrect assumptions about data types can lead to this error.
  
  
  Inconsistent Data: If the data being processed contains unexpected or inconsistent values (e.g., non-numeric characters in a numeric field), this can trigger the error.
  
  
  Database Field Types: If the database field types do not match the expected types in the ABAP program, this can also lead to conversion issues.
  
  
  Solutions to GT142 Error
  
  
  Check Data Types: Review the data types of the variables involved in the conversion. Ensure that they are compatible and that any necessary conversions are explicitly handled.
  
  
  Use Conversion Functions: Utilize built-in ABAP conversion functions (like CONCATENATE, CONVERT_TO_STRING, CONVERT_TO_INTEGER, etc.) to ensure that data is converted properly before assignment.
  
  
  Debugging: Use the ABAP debugger to step through the code and identify where the conversion is failing. Check the values of the variables at runtime to see if they match the expected types.
  
  
  Error Handling: Implement error handling in your code to catch conversion errors and provide meaningful messages or fallback logic.
  
  
  Data Validation: Before performing conversions, validate the data to ensure it meets the expected format. For example, check if a string can be converted to a number.
  
  
  Review Custom Code: If the error is occurring in custom code, review the logic for any assumptions that may not hold true for all data inputs.
  
  
  Related Information
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the GT142 error. SAP frequently updates its knowledge base with solutions for common errors.
  
  
  Documentation: Refer to the ABAP documentation for details on data types and conversion functions. Understanding how SAP handles data types can help prevent these errors.
  
  
  Community Forums: Engage with SAP community forums or support channels where other users may have encountered similar issues. They can provide insights or solutions based on their experiences.
  
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the GT142 error effectively.