How To Fix QA128 - Sample size was calculated

SAP Error Message - Details

• Message type: E = Error

• Message class: QA - QM : Inspection lots

• Message number: 128

• Message text: Sample size was calculated

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message QA128 - Sample size was calculated ?

  The SAP error message QA128, which states "Sample size was calculated," typically occurs in the context of quality management processes, particularly when dealing with inspection lots and sampling procedures in SAP Quality Management (QM).
  Cause:
  This message indicates that the system has calculated a sample size based on the sampling procedure defined in the quality inspection plan. The calculation is based on various factors, such as:
  
  The lot size of the material being inspected.
  The sampling procedure defined in the inspection plan.
  The statistical methods applied for sampling.
  
  The message itself is not necessarily an error but rather an informational message indicating that the sample size has been determined according to the defined criteria.
  Solution:
  If you encounter this message and it is not leading to any issues in your process, you may not need to take any action. However, if you are looking to address or modify the sample size calculation, consider the following steps:
  
  
  Review the Inspection Plan: Check the inspection plan associated with the inspection lot to ensure that the sampling procedure is set up correctly. You can do this by navigating to the relevant inspection plan in SAP QM.
  
  
  Adjust Sampling Procedure: If the calculated sample size is not suitable for your needs, you may need to adjust the sampling procedure. This can involve changing the parameters or criteria used in the sampling procedure.
  
  
  Check Lot Size: Ensure that the lot size is correctly defined, as this directly impacts the sample size calculation.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for detailed information on how sampling procedures work in SAP QM.
  
  
  User Exits or Enhancements: If you have specific business requirements that are not met by the standard sampling procedures, consider implementing user exits or enhancements to customize the sampling logic.
  
  
  Related Information:
  
  SAP QM Module: Familiarize yourself with the Quality Management module in SAP, especially the concepts of inspection lots, sampling procedures, and quality inspection plans.
  Statistical Quality Control: Understanding the principles of statistical quality control can help in setting up effective sampling procedures.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues or enhancements related to sampling in SAP QM.
  
  If you continue to experience issues or if the message is causing problems in your workflow, it may be beneficial to consult with your SAP support team or a qualified SAP consultant for further assistance.