How To Fix O3391 - QCI: Calculation Failure - Junk Values Returned from External Routines !

SAP Error Message - Details

• Message type: E = Error

• Message class: O3 - IS-Oil: HPM messages (goods movements, QCI, deliveries)

• Message number: 391

• Message text: QCI: Calculation Failure - Junk Values Returned from External Routines !

Self-Explanatory Message

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• What is the cause and solution for SAP error message O3391 - QCI: Calculation Failure - Junk Values Returned from External Routines ! ?

  The SAP error message O3391, which indicates "QCI: Calculation Failure - Junk Values Returned from External Routines," typically occurs in the context of the Quality Control Inspection (QCI) process. This error suggests that the system encountered unexpected or invalid values during the execution of external routines, which are often used for calculations or data processing in quality management.
  Causes:
  
  Invalid Input Data: The external routine may be receiving invalid or unexpected input data, leading to incorrect calculations.
  Configuration Issues: There may be misconfigurations in the quality management settings or in the external routines themselves.
  External Routine Errors: The external routines (like user-defined functions or third-party integrations) may have bugs or issues that cause them to return junk values.
  Data Type Mismatches: If the data types expected by the external routine do not match the actual data types being passed, it can lead to calculation failures.
  System Performance Issues: If the system is under heavy load or if there are performance issues, it may not execute the external routines correctly.
  
  Solutions:
  
  Check Input Data: Review the data being passed to the external routines to ensure it is valid and meets the expected format and type.
  Review External Routines: If you have access to the code of the external routines, check for any logical errors or bugs that could lead to junk values being returned.
  Configuration Review: Ensure that all relevant configurations in the Quality Management module are set up correctly. This includes checking the settings for inspection plans, characteristics, and any associated external routines.
  Debugging: Use debugging tools to trace the execution of the external routines and identify where the junk values are being generated.
  Consult Documentation: Refer to SAP documentation or notes related to the specific external routines being used to see if there are known issues or patches available.
  System Performance Check: Monitor system performance and resource usage to ensure that the system is not overloaded, which could affect the execution of external routines.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to the O3391 error. SAP frequently releases notes that address specific bugs or provide guidance on configuration.
  Quality Management Documentation: Review the SAP Quality Management documentation for best practices and guidelines on setting up inspection plans and external routines.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.