How To Fix QS154 - Upper specification limit is not on class limit

SAP Error Message - Details

• Message type: E = Error

• Message class: QS - QM: Master data

• Message number: 154

• Message text: Upper specification limit is not on class limit

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message QS154 - Upper specification limit is not on class limit ?

  The SAP error message QS154, which states "Upper specification limit is not on class limit," typically occurs in the context of Quality Management (QM) within SAP. This error indicates that the upper specification limit (USL) defined for a characteristic in a quality inspection plan does not align with the defined class limits for that characteristic.
  Cause:
  
  Mismatch in Specification Limits: The upper specification limit set for a characteristic is outside the range of acceptable values defined in the class limits.
  Incorrect Class Limits: The class limits for the characteristic may not have been defined correctly, leading to discrepancies with the specification limits.
  Data Entry Errors: There may have been a mistake in entering the specification limits or class limits, causing the mismatch.
  
  Solution:
  
  Review Specification Limits: Check the upper specification limit defined for the characteristic in the inspection plan. Ensure that it falls within the acceptable range of the class limits.
  Adjust Class Limits: If the specification limit is correct, consider adjusting the class limits to accommodate the upper specification limit.
  Correct Data Entry: Verify that all data entries related to the characteristic, including both specification and class limits, are accurate and consistent.
  Consult Documentation: Refer to SAP documentation or guidelines for setting up quality inspection plans to ensure compliance with best practices.
  Testing: After making adjustments, test the changes by attempting to create or process the inspection lot again to ensure that the error is resolved.
  
  Related Information:
  
  Quality Management Module: This error is specific to the Quality Management module in SAP, which deals with quality planning, inspection, and control.
  Inspection Plans: Understanding how to create and manage inspection plans in SAP is crucial for avoiding such errors.
  Class Limits: Familiarize yourself with how class limits are defined and their importance in quality control processes.
  SAP Notes: Check SAP Notes for any updates or patches related to this error message, as there may be specific fixes or recommendations provided by SAP.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant specializing in Quality Management for further assistance.