How To Fix QT426 - Error converting user fields (QAIPP-USERC1 and QAIPP-USERC2)

SAP Error Message - Details

• Message type: E = Error

• Message class: QT - QM: Inspection during production (with inspection points)

• Message number: 426

• Message text: Error converting user fields (QAIPP-USERC1 and QAIPP-USERC2)

Self-Explanatory Message

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• What is the cause and solution for SAP error message QT426 - Error converting user fields (QAIPP-USERC1 and QAIPP-USERC2) ?

  The SAP error message QT426, which states "Error converting user fields (QAIPP-USERC1 and QAIPP-USERC2)," typically occurs during the processing of quality inspection data in the Quality Management (QM) module. This error indicates that there is an issue with the conversion of user-defined fields (USERC1 and USERC2) in the quality inspection lot.
  Causes:
  
  
  Data Type Mismatch: The user fields (QAIPP-USERC1 and QAIPP-USERC2) may have a data type that does not match the expected format. For example, if the fields are defined as numeric but contain alphanumeric data, this can lead to conversion errors.
  
  
  Field Length Issues: The length of the data being input into these fields may exceed the defined length in the database, causing a truncation error.
  
  
  Incorrect Configuration: The configuration settings for the user fields in the quality management module may not be set up correctly, leading to issues during data processing.
  
  
  Data Corruption: There may be corrupted data in the database that is causing the conversion to fail.
  
  
  Custom Code Issues: If there are any custom enhancements or user exits that manipulate these fields, they may contain bugs or logic errors.
  
  
  Solutions:
  
  
  Check Data Types: Verify that the data being entered into QAIPP-USERC1 and QAIPP-USERC2 matches the expected data types. Ensure that numeric fields contain only numbers and that character fields do not exceed their defined lengths.
  
  
  Review Field Lengths: Ensure that the data being input does not exceed the maximum length defined for these fields in the database.
  
  
  Configuration Review: Check the configuration settings for the user fields in the Quality Management module. Ensure that they are set up correctly according to your business requirements.
  
  
  Data Validation: Implement data validation checks before data is processed to ensure that it meets the required formats and lengths.
  
  
  Debugging Custom Code: If there are any custom enhancements or user exits, review the code for any potential issues that could be causing the error. Debugging may be necessary to identify the root cause.
  
  
  Database Integrity Check: Perform a database integrity check to ensure that there is no corruption in the data related to these fields.
  
  
  Related Information:
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently releases updates that may address specific errors.
  
  
  Transaction Codes: Use transaction codes like SE11 (Data Dictionary) to check the definitions of the user fields and SE80 (Object Navigator) to review any related custom code.
  
  
  Quality Management Documentation: Refer to SAP documentation on Quality Management for best practices and guidelines on configuring user fields.
  
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or reach out to SAP support for further assistance.