How To Fix QE559 - An initial value is not possible for the mean value (& valid values)

SAP Error Message - Details

• Message type: E = Error

• Message class: QE - RM-QSS Fehlertexte zur Ergebniserfassung

• Message number: 559

• Message text: An initial value is not possible for the mean value (& valid values)

What causes this issue?

The mean value cannot be reset back to the initial value because the
number of recorded and valid values is not zero.

System Response

When you select ENTER the system assigns the value of 0 to the mean
value.

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 QE559 - An initial value is not possible for the mean value (& valid values) ?

  The SAP error message QE559, which states "An initial value is not possible for the mean value (& valid values)," typically occurs in the context of Quality Management (QM) when dealing with inspection characteristics and mean value calculations. This error indicates that the system is unable to calculate a mean value for a characteristic because the initial value provided is not valid or appropriate.
  Cause:
  
  Invalid Initial Value: The initial value set for the mean calculation may not be within the acceptable range or format defined for that characteristic.
  Missing Data: There may be insufficient data points to calculate a mean value, such as missing inspection results.
  Configuration Issues: The configuration of the inspection characteristic may not allow for mean value calculations, or the characteristic may not be set up correctly.
  Data Type Mismatch: The data type of the initial value may not match the expected data type for the characteristic.
  
  Solution:
  
  Check Initial Value: Verify the initial value you are trying to set for the mean calculation. Ensure it is within the valid range and format for the characteristic.
  Review Inspection Results: Ensure that there are enough inspection results available for the characteristic to calculate a mean value. If results are missing, you may need to enter them.
  Inspect Characteristic Configuration: Review the configuration of the inspection characteristic in the Quality Management module. Ensure that it is set up to allow mean value calculations.
  Data Type Verification: Check that the data type of the initial value matches the expected data type for the characteristic. If there is a mismatch, correct it.
  Consult Documentation: Refer to SAP documentation or help resources for specific details on the characteristic and mean value calculations.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as QA32 (for inspection lot processing) or QA11 (for recording results) to help troubleshoot the issue.
  User Forums: Consider visiting 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 consult with your SAP support team or a technical consultant who specializes in SAP QM for further assistance.