How To Fix IO402 - Entry string &1 has a character that is missing in character set &2

SAP Error Message - Details

• Message type: E = Error

• Message class: IO - Plant Maintenance: Object List

• Message number: 402

• Message text: Entry string &1 has a character that is missing in character set &2

What causes this issue?

Program error

System Response

The system does not allow further processing.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IO402 - Entry string &1 has a character that is missing in character set &2 ?

  The SAP error message IO402 indicates that there is an issue with a character in a string that is not supported by the specified character set. This typically occurs when data is being processed or transferred, and the character set defined for the operation does not include certain characters present in the data.
  Cause:
  
  Character Set Mismatch: The string contains characters that are not part of the defined character set. For example, if the character set is ASCII, and the string contains Unicode characters, this error will occur.
  Data Corruption: Sometimes, data may become corrupted or improperly encoded, leading to unsupported characters.
  Incorrect Configuration: The character set configuration in the SAP system may not match the data being processed.
  
  Solution:
  
  
  Check Character Set Configuration: Verify the character set configuration in your SAP system. Ensure that it matches the data you are trying to process. You can check this in the transaction code SU01 for user settings or RZ10 for instance profile parameters.
  
  
  Data Validation: Review the data being processed to identify any unsupported characters. You may need to clean or transform the data to ensure it only contains characters supported by the specified character set.
  
  
  Encoding Conversion: If you are importing data from an external source, consider converting the data to the appropriate character set before processing it in SAP. Tools or scripts can be used to convert character encodings.
  
  
  Use of Unicode: If your SAP system supports Unicode, consider switching to a Unicode-compatible character set, which can handle a wider range of characters.
  
  
  Error Logging: Check the application logs or error logs for more details about the specific entry that caused the error. This can help in identifying the problematic character.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to character set issues for specific guidance or patches that may address the problem.
  Documentation: Review SAP documentation on character sets and encoding to understand the limitations and configurations available.
  Support: If the issue persists, consider reaching out to SAP support for assistance, providing them with the error details and context.
  
  By following these steps, you should be able to identify and resolve the issue causing the IO402 error in your SAP system.