How To Fix M9078 - Conversion error: not possible to convert from & to &

SAP Error Message - Details

• Message type: E = Error

• Message class: M9 - Logistics Information System: Planning Data

• Message number: 078

• Message text: Conversion error: not possible to convert from & to &

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message M9078 - Conversion error: not possible to convert from & to & ?

  The SAP error message M9078, which states "Conversion error: not possible to convert from & to &," typically occurs when there is an issue with data type conversion in the SAP system. This error can arise in various contexts, such as during data processing, report generation, or when executing certain transactions.
  Causes:
  
  
  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 convert a string to a numeric type when the string contains non-numeric characters.
  
  
  Invalid Data Format: The data being processed may not be in the expected format. For instance, if a date is expected but a string is provided, this can lead to conversion errors.
  
  
  Null or Empty Values: Attempting to convert null or empty values can also trigger this error, especially if the conversion logic does not handle such cases.
  
  
  Custom Code Issues: If there are custom ABAP programs or enhancements involved, there may be bugs or logic errors in the code that lead to this conversion issue.
  
  
  Database Field Types: Sometimes, the issue can arise from differences in database field types, especially if there have been changes in the database schema.
  
  
  Solutions:
  
  
  Check Data Types: Review the data types of the fields involved in the conversion. Ensure that the source and target data types are compatible.
  
  
  Validate Input Data: Before performing conversions, validate the input data to ensure it meets the expected format and type. Implement error handling to manage unexpected values.
  
  
  Debugging: If the error occurs in custom code, use the ABAP debugger to trace the execution and identify where the conversion is failing. Look for the specific line of code that triggers the error.
  
  
  Review Custom Logic: If the error is in a custom program, review the logic for any potential flaws. Ensure that all possible data scenarios are handled correctly.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide guidance on similar issues.
  
  
  Data Cleansing: If the error is due to data quality issues, consider implementing data cleansing processes to ensure that the data being processed is valid and conforms to expected formats.
  
  
  Related Information:
  
  Transaction Codes: Depending on where the error occurs, you may want to check transaction codes like SE80 (Object Navigator) for custom programs or SE38 (ABAP Editor) for executing reports.
  SAP Community: The SAP Community forums can be a valuable resource for finding similar issues and solutions shared by other users.
  Documentation: Review SAP documentation related to data types and conversion functions in ABAP to better understand how to handle conversions properly.
  
  By following these steps, you should be able to identify the root cause of the M9078 error and implement a suitable solution.